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You can use the deburrs hole automatically as a drill.
Double-flute design gives you faster and smoother cutting
Titanium Nitride Coating for Cooler Run
Quick Change 1/4" Hex Shank
High speed steel for long life
These step drill bits are variety for ideal materials from wood to materials to metal, plastic, and fiberglass.
They also help expand existing holes
Two flute design tips allow for quick insertion without chipping
3pcs Titanium HSS Cone Step Drill Bit Set Imperial 1/4" Hex Shank
3 piece 1/4" case and large HSS hex shank titanium cone coated step drill bit set.
3 Large HSS Steel Step Cone Drill Titanium Bit Set Hole Cutter
Specifications:
Material: HSS
1/4" Hex shank
Size: (approx.)
0.16, 0.20, 0.24, 0.31, 0.35, 0.39, 0.43, 0.47 in (3, 4, 5, 6, 7, 8, 9, 10, 11, 12 mm)
0.16, 0.24, 0.31, 0.39, 0.47 in (4, 6, 8, 10, 12 mm)
0.16, 0.24, 0.31, 0.39, 0.47, 0.47, 0.55, 0.63, 0.71, 0.79
4241 High Speed Steel HSS (Whos hardness is 25 degrees such as carbon steel, board, insulation board, and wood board for the work)
Package Contents:
3 x step drill bits with bag.