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Step drill bit spiral flute

Shank type Bit Dia. (mm) Overall length (mm) Pc.per pkg. Part No.
1/4inch Hex MZ 4 to 12 65 1 D-40141
1/4inch Hex MZ 4 to 20 75 1 D-40157
Straight 4 to 32 102 1 D-40163