HSS Step Drill Bit

Description

Hss step drill bit.
Round shank.
Size: 4~39mm (4, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39).
Shank diameter: 13mm.
Material: HSS and Titanium plated.
For steel sheet, aluminum sheet, wood board, plastic board, etc.
Package: double blister