Alpha Onsite+ 6 Piece Reduced Shank Drill Set 14-20mm - SM6STRTP-B
The Alpha SM6STRTP-B 6 Piece Reduced Shank Drill Set is the heavy-duty solution for tradespeople who need to bore large-diameter holes without upgrading to a specialized magnetic drill or drill press. By turning down the shank to 12.7mm, these bits allow your standard 13mm power drill to tackle holes up to 20mm in diameter. Powered by Alpha's patented "Step Tip" technology, these drills cut significantly smoother than traditional reduced-shank bits, virtually eliminating the violent "grabbing" or jamming that often occurs when breaking through metal plate.
Features:
12.7mm Reduced Shank: The shank is turned down to fit standard 1/2" (12.7mm) drill chucks, instantly expanding the capacity of your existing power tools without requiring expensive machinery upgrades.
3-Flat Shank Profile: Features three ground flats on the shank that lock into the chuck jaws, ensuring maximum torque transmission and preventing the bit from spinning inside the drill under heavy load.
Patented Step Tip Design: The innovative stepped geometry acts as a built-in pilot drill, reducing heat buildup and eliminating the need to center punch, while ensuring the bit stays sharper up to 6x longer than standard HSS.
Black Oxide Finish: Treated with a premium black oxide coating that enhances lubricant retention, helping to keep the bit cool and improving chip flow during deep drilling operations.
Burr-Free Performance: The 135° split point and step design shear the material cleanly rather than gouging it, resulting in precise, round holes that require minimal deburring.
Specifications:
Part Number: SM6STRTP-B
Material: M2 High Speed Steel (HSS)
Shank: 12.7mm Reduced with 3-Flats
Tip Type: Step Tip (135° Split Point)
Finish: Black Oxide / Gold Ferrous
Cutting Depth: 3xD
Contents:
6 x Reduced Shank Drills: 14.0mm, 15.0mm, 16.0mm, 18.0mm, 19.0mm, 20.0mm
Important: The use of cutting fluid (such as Alpha Liquid Gold) is mandatory with these large diameter drills to prevent heat buildup and maximize tool life.