Colonial Machine Company
Bussmann Division
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- Brand: Bussmann Division Colonial Machine Company Hilti J. H. Williams Oatey Stanley-Black & Decker Inc.
- Drill Bits: Step Bit
Part #:134-10502ZR
- IRWIN Step Drill Bit Set, 3-Piece
Made with stainless steel and high impact polymer components
IRWIN Tools 10502ZR Unibit Sheet Metal Step Drill Bit Set is a selection of the most popular Unibit step drill bits in the low diameter range (below 7/8"). Ideal for drilling true round holes with precise control in a variety of materials like sheet metal, metal plates, aluminum, fiberglass, plastics, plexiglass, and wood. The specially designed cutting edge drills true, round holes for a smooth, clean finish, and 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. Plus, the 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), and Unibit #3 with 9 hole sizes (1/4" to 3/4" by 16ths). Product made in USA.
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Part #:134-15102ZR
- Country of Origin UNITED STATES. HAZMAT Item NO. Special Order Item NO. State Restricted NO:
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Part #:134-15103ZR
- Titanium Nitride Coated Fractional Self-Starting Features
Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
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
9 Steps
3/8" Hex Shank Size
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