Step Drill Unibit

Some Tips on Choosing the Right Drill Bit For Your Drill

When it is time to bore a hole, a drill bit attached to the end of a power drill is often the most efficient method. Bits need to be selected to match both the job and the material. While there are special types that do not fall into traditional measuring standards, most are made in either standard or metric sizes. Most bits are used to make round holes, but some of the special ones create various shapes.

The most common type in use today is the twist bit. It can be used to bore holes in metal, wood, and plastic depending on the angle and fluting of the bit. Twist bits are commonly available in many sizes, from the tiny ones with a diameter of about two thousandths of an inch to those with a diameter approaching four inches. Lengths for home use can reach almost forty inches.

Center bits often are used for metals to make a starter hole that will be drilled with a larger bit. However, the true purpose of center bits is to make an indentation for a lathe. Spotting bits are actually the preferred choice for starter holes.

When the job calls for enlarging a hole that already exists, core or reamer bits can be used. The choice is determined by how much the hole needs to be enlarged. Reamers should be used when only a small increase is needed, while cores should be used when much more material must be removed.

A brad point or dowel bit is the same thing, and these are sometimes referred to as lip and spurs. They are often chosen for use on wood and plastic. They are cousins of the twist style, but can produce a neater hole. A twist bit can catch and pull fibers, leaving a messy hole.

Paddle or spade bits are often used with wood, although they can cause splintering when exiting. They are made almost entirely for hand drills. Woodworkers often prize them because they can produce a neater hole than most twist bits.

One type that is very popular with construction workers is the speed or step bit, also called a Unibit. These can drill holes in numerous sizes, eliminating the need to switch bits for each new task. They work with plywood, particle board, sheet rock, and many more materials.

Masonry bits are designed for use with an electric or battery powered hammer drill. Hammering of the masonry at the end of the bit helps increase penetration. They are marketed in a wide array of sizes as well as lengths.

Electricians have helped make installer bits popular. These may also be called bell hangers. The bit itself features a hole, and when the bit is inserted, it can fish wiring out from between walls and bring it back.

By selecting the proper type and size you need for the job to be performed, you can finish faster and with neater results. Most bits can be used with a portable electric drill, but there are times when you m
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[USED] UNIBIT 3 PIECE STEP DRILL BIT SET 3/16″-3/4″ HOLES USA MADE #502 $49.99

Irwin 10239 UNIBIT STEP DRILL BIT $63.83

1/4″ TO 3/4″ HSS STEP DRILL UNIBIT TITANIUM COATED FREE SHIPPING IN THE U.S.A. $12.55

Irwin Unibit 102201/2″ to 1″ Hole Enlarging Step Drill Bit 1/2 inch Shank reamer $9.99

Klein Tools #3 step bit,unibit,0 1/4- 3/4 ” inch drill bit, $9.99

New Irwin Unibit #4 10234 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit $21.99

KLEIN TOOLS 59010 Unibit Step-Drill Bit 1-1/8″ *** BRAND NEW *** $49.76

3 pc HIGH SPEED STEP DRILLS METAL Unibit drill 28 $24.99

Irwin High Speed Molybdenum Steel Unibit Step Drill Bit 10234 $49.99

2 – UNIBIT STEP DRILL BIT 3/8″ & 1/2″ HOLE ONLY NEW $9.99

Irwin 15103 Unibit 3T Titanium 1/4″-3/4″ Step Drill Bit NEW $0.01

3 Pc Piece Unibit Titanium HSS Counter Sink Step Drill Uni Tapered Bit Tool Set $28.99

Irwin Unibit Step Drill Bit #3 10233 1/4″ – 3/4″ $23.99

UNIBIT Model 10231 – Step Drill Bit – 13 steps (1/8″ to 1/2″) $10.00

Irwin 1/8″ – 1/2 ” Unibit Step Drill Bit 10231 $26.99

Irwin 3/16″ – 1/2 ” Unibit Step Drill Bit 10232 $26.99

Irwin 1/4″ – 3/4″ Unibit Step Drill Bit 10233 $42.99

UNIBIT STEP DRILL 1/2 TO 1 INCH $6.99

3/16″-7/8″ TITANIUM STEEL METAL UNI VARIABLE STEPPED DOWN DRILL BIT UNIBIT TOOL $19.87

3/16″-1/2″ TITANIUM STEEL METAL UNI VARIABLE STEPPED DOWN DRILL BIT UNIBIT TOOL $18.65

IRWIN UNIBIT #1 1/8″ – 1/2″ STEP DRILL BIT NEW IN PACKAGE $10.74

MAG BIT #851.1375 3/4″ – 1 3/8″ STEP DRILL/UNIBIT $49.95

Klein Tools Unibit High-Speed Step Drill Bit 59002 $30.00

Unibit Step Drill 3/8″ Hole Only $8.68

Irwin 10313 Unibit13 1-1/8-Inch 1/2-Inch Shank Step Drill Bit $64.66

Irwin 15502 3-Piece TiN Unibit Step Drill Set $109.53

Irwin 10228 Unibit 228 Step Drill Bit Set 4-Piece $75.99

NEW IRWIN 15101 1/8″ – 1/2″ Unibit Titanium Step Drill Bit $17.99

NEW 3PC HSS TITANIUM UNIBIT STEP DRILL BITS SET 28 SIZE $22.99

Irwin Unibit 585-11105 Unibit-5M 5Mm To 35Mm Step Drill $79.54

IRWIN- 15502-TITANIUM UNIBIT STEP DRILL BIT- 3 PC SET $62.95

Klein 59024 Unibit® Steel Step-Drill Bit Metric $86.99

New Irwin Brand Unibit 3 Piece Step Drill Set 15504SM $35.09

Unibit Step Drill 10232 3/16″ – 1/2″ at 1/16″ interval $18.00

KLEIN TOOLS 59005 Unibit Step-Drill 3/16″ to 1/2″ $25.84

KLEIN TOOLS 59021 Unibit Step-Drill-Metric 4 to 12mm $19.16

Irwin Unibit-1 1-8″ To 1/2″ Step Drill $25.17

Irwin Unibit-10 1/2″ Step Drill $24.62

Irwin Unibit-3Mt 6 mm To 18 mm Step Drill Tin $50.71

Irwin Unibit-13 1-1/8″ Step Drill $52.09

Irwin Unibit-4t 3/16″ -7/8″ Step Drill Tin $59.92

Irwin Unibit-5 1/4″ -1-3/8″ Step Drill $79.70

Irwin Unibit-9 7/8″ And 1-1/8″ step Drill $60.48

Irwin Unibit-21 13/16″ -1-3/8″ step Drill $88.30

NEW Irwin 10232 UNIBIT #2 – 3/16″ to 1/2″ shank step drill bit $15.00

Irwin 11580 Unibit20M 14-24mm by 1/2-Inch Shank Hole Enlarging Step Drill Bit $40.00

Greenlee 34403 Multi-Hole Step Drill Bit, 3/16″ to 7/8″ like a unibit $45.00

Irwin 10239 Unibit9 7/8″ to 1-1/8″ 1/2″ Shank Step Drill Bit 1/2″ & 3/4″ Conduit $55.00

Irwin 10234 Unibit #4 3/16-Inch to 7/8-Inch 3/8-Inch Shank Step Drill Bit $32.00

Irwin 10311 Unibit #11 7/8-Inch 3/8-Inch Shank Step Drill Bit $20.00

Irwin 11581 Unibit #21M 20-34mm by 1/2-Inch Shank Hole Enlarging Step Drill Bit $85.00

NEW Irwin 10231 #1 Unibit 1/8-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit $20.00

Irwin 10220 Unibit #20 9/16″ to 1″, 1/2″ Shank Hole Enlarging Step Drill Bit $34.00

Irwin 10312 Unibit #12 3/8-Inch 1/4-Inch Shank Step Drill Bit $20.00

Irwin 11103 Unibit #3M 6mm to 18mm by 3/8″ Shank Step Drill Bit $25.00

Set of 2 Klein Tools Step Bit Unibit 3/16 to 7/8 inch Drill Bit Reamer Auger $1.25

KLEIN TOOLS 59026 Unibit Step-Drill-Metric 4 to 22mm $39.92

KLEIN TOOLS 59027 Unibit Step-Drill-Metric 5 to 35mm $72.45

KLEIN TOOLS 59029 Unibit Step-Drill-Metric 5 to 29mm $47.31

Irwin 10231 Unibit1 1/8-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit $25.74

Irwin 10231 Unibit 1/8″ to 1/2″ Step Drill $17.37

28 size 3 pc HSS M2 Titanium Unibit Set Step Drill Bit $16.95

5 pc Drill Master UniBit Titanium Nitride HSS Counter Sink Step Tapered Bit Set $54.95

2 pc Drill Master UniBit Titanium Nitride HSS Counter Sink Step Tapered Bit Set $29.95

Irwin 3 Piece Step Drills 15502 Unibit 502T Titanium Nitrate Coated Nylon Pouch $89.85

Irwin 10312 Unibit12 3/8-Inch 1/4-Inch Shank Step Drill Bit $22.94

3pc Step Drill Bit Set Unibit Titanium HSS M2 28 Sizes Industrial Reamer 1/8-3/4 $12.59

KLEIN TOOLS 59001 Unibit Step-Drill Bit 1/8 to 1/2″ $21.90

KLEIN TOOLS 59003 Unibit Step-Drill Bit 1/4″ to 3/4″ $41.18

KLEIN TOOLS 59004 Unibit Step-Drill 13/16″ to 1-3/8″ $82.01

Klein 59004 Unibit® High-Speed Steel Step-Drill Bit $86.99

Klein 59021 Unibit® Steel Step-Drill Bit Metric $23.99

Irwin 10239CB Unibit Step Drill Cobalt #9-7/8 #38 Bit $74.96

Irwin 10231 UniBit #1 Step Drill Bit with 13 Hole Sizes $28.16

Irwin 10231CB Cobalt #1 Unibit Step Drill Bit $32.91

Irwin 10232CB Cobalt #2 Unibit Step Drill Bit $34.96

Unibit Step Drill 3 Piece Set $108.28

Unibit 1/4″ to 3/4″ Step Drill $59.06

Unibit 1/8″ to 1/2″ Step Drill $33.52

Petersen Visegrips Step Drill #13 Shank 1-1/8 (Unibit-13) 10313ZR $53.99

New Unibit PG-29mm (5-28.3mm) 10 Hole Step Drill Bit #11194 $25.00

New Unibit 5-35 5mm-35mm 13 Hole Step Drill Bit #11105 $30.00

Lenox Vari-Bit Step Drill Bits -vb-11 vari-bit step drill unibit-13 30888 $66.82

Irwin Unibit Fractional Step Drills -unibit-13 1-1/8″ step drill 10313 $49.36

3/16″ to 1/2″ TITANIUM STEP DRILL unibit High Speed NEW $14.88

1/4″-1-3/8″ TITANIUM STEEL METAL UNIBIT , STEPPED DOWN DRILL BIT UNIBIT TOOL $29.89

Irwin 10235 Unibit, 1/4″ To 1-3/8″ Step Drill $78.20

Irwin 10234 Unibit, 3/16″ To 7/8″ Step Drill $43.44

Unibit Cobalt Step Drills -4 cobalt 12 hole sizes (3/16″-7/8″) 1/16″ increm $50.88

Unibit 3/16″ to 1/2″ Step Drill $33.52

Unibit® High Speed Steel Step-Drill Bit — Inch #59011 $53.94

IRWIN- UNIBIT STEP DRILL BIT-10234-NEW! $34.99

IRWIN-10233- UNIBIT 1/4″-3/4″ STEP DRILL BIT-NEW!! $27.95

Irwin Unibit #9 Step Drill Bit 7/8″ and 1-1/8″ NEW $19.99

Irwin Unibit Metric Step Drills -unibit-4m 4mm to 22mm step drill 11104 $47.20

Irwin 10232 UniBit #2 Step Drill Bit $34.91

Irwin Industrial 10239 #9 Unibit Step Drill, 7/8 1-1/8″ $23.39

Unibit Cobalt Step Drills -9 cobalt 2 hole sizes (7/8″ and 1-1/8″) for 1/2″ $65.88

Irwin Unibit Cobalt Step Drill Sets -cobalt 3pc set 10231 10232 & 10233 10502CB $94.99

585-10235 Unibit-5 1-4 Inch-1-3-8 Inch Step Drill $81.17

Neiko Titanium Step Drill Bit – 1/4 to 1-3/8 in 1/8 Increments, 10 Steps $9.95 Neiko Tools U.S.A. Titanium Step Drill Bit 1/4″ to 1-3/8″ in 1/8″ Increments, Two-Flute Design for Faster, Smoother Cutting, 3 Flatted 3/8″ Shank, Heat Treated HSS with Titanium Nitride Coating, Self-starting – no walking and no center punch required, Perfect for clean holes in thin materials like steel, stainless steel, copper, aluminum or plastic…

Irwin 10231 Unibit1 1/8-Inch to 1/2-Inch 1/4-Inch Shank Step Drill Bit $13.00 SpeedPoint tip geometry penetrates stainless steel 6 times faster than before. Single-flute design minimizes vibration and controls progression through the drilling steps. U.S.A….

Irwin 10235 Unibit5 1/4-Inch to 1-3/8-Inch 1/2-Inch Shank Step Drill Bit $53.95 Unibit, 1/4′ To 1-3/8′ Step Drill, 10 Hole Sizes From 1/4′ To 1-3/8′ In 1/8′ Increments, Maximum Material Thickness 1/8′, 3 Flatted Shank, Shank Size 1/2′, Single Fluted Cutting Edge Assures True Round Holes & Allows Greater Control, Carded….

10310 Irwin Unibit Unibit-10 1/2 Step Drill $20.08 Features and Benefits: Single flute cutting edge for greater control through steps 3 flatted shank prevents slipping in drill chuck New SpeedPoint tip penetrates faster than previous Unibits and prevents walking Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates …

3-Pice Unibit Set $86.19 10502 3 Pc. Uni-Bit Set Features and Benefits: Non-skid self-starting tip eliminates skidding and the need for center punching Single-flute cutting edge for greater control through steps 3 faulted shank prevents slipping in drill chuck Available in fractional and metric sizes Also available with titanium nitride coating for longer lifeIncludes: HSS #1, 2, and 3…

#1 Titanium Coated Fractional Self-Starting/Hole Enlarging Unibit $31.14 15101 TiN Coated #1 Uni-Bit Titanium Fractional Self-Starting / Hole Enlarging Features and Benefits: Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum,…

Vise Grip 10234 4 High Speed Steel Fractional Self Starting Unibit Drill Bit $40.47 features and benefits: single flute cutting edge for greater control through steps hex shank prevents slipping in drill chuck new speedpoint tip penetrates faster than previous unibits and prevents walking ideal for drilling holes into thin materials such as stainless steel copper brass aluminum plastics and laminates hole sizes: 3/16″ – 7/8″; number of holes: 12 s…