Irwin Tools IRWIN Step Drill Bit Set, General Purpose, 4-Piece (10225)

★★★★★ 4.2 108 reviews

$203.27
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Management number 209035229 Release Date 2026/03/29 List Price $81.31 Model Number 209035229
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Product Description IRWIN Tools 10225 Unibit Sheet Metal Step Drill Bit Set is a selection of the most popular Unibits that cover a wide range of applications. Ideal for drilling true, round holes with a smooth, clean finish in a variety of materials like sheet metal, metal plates, aluminum, fiberglass, plastics, plexiglass, and wood. The SpeedPoint tip penetrates fast, prevents "walking," and eliminates the need for a pilot/starting hole. The hex shank provdes a secure grip in the drill chuck. Permanent laser-etched sizes inside the flute are easy to read for precise control during the hole enlarging process. Contains: Unibit #1 with 13 hole sizes (1/8" to 1/2" by 32nds), Unibit #2 with 6 hole sizes (3/16" to 1/2" by 16ths for deeper steps), Unibit #4 with 12 hole sizes (3/16" to 7/8" by 16ths), and Unibit #21 with 10 hole sizes (13/16" to 1-3/8" for hole enlarging). Product made in USA. From the Manufacturer Irwin's Unibit SpeedPoint combines the most desired features of a Step Drill, speed and control and as many as 13 different sizes onto one single-fluted step drill bit. Irwin Industrial Tools 10225 2254-Piece General Purpose Set (10231, 10232, 10234, 10221)

  • Single-flute cutting edges for greater control through steps
  • 3-flatted shanks prevents slipping in drill chuck
  • Non-skid self-starting tips eliminate skidding and the need for center punching
  • Sizes clearly laser-etched to make precise drilling easy
  • Set includes HSS , 2, 4, and 21 size step drills
  • 4 most popular Unibit sizes cover a wide range of applications
  • SpeedPoint tip prevents "walking," gets fast starts, and eliminates the need for pilot/starting hole
  • Single-flute cutting edge drills true, round holes with smooth, clean finish
  • Hex shank provides secure grip in the drill chuck
  • 4 most popular Unibit sizes cover a wide range of applications
  • SpeedPoint tip prevents "walking," gets fast starts, and eliminates the need for pilot/starting hole
  • Single-flute cutting edge drills true, round holes with smooth, clean finish
  • Hex shank provides secure grip in the drill chuck
UPC 038548102252 767654328019
Model 10225
Brand Name IRWIN
Shank Type Hex
Unit Count 1.0 Count
Item Weight 0.01 Ounces
Point Style Split Point
Finish Types High-speed Steel
Manufacturer IRWIN
Material Type High Speed Steel (HSS)
Item Dimensions 4.75 x 1.75 x 6.5 inches
Tool Flute Type Straight
Number of Flutes 1
Minimum Bore Diameter 0.43 Centimeters
Surface Recommendation Alloy Steel
Global Trade Identification Number 00038548102252

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