6-35MM Titanium Coated Step Cone Drill Bit HSS 13 Steps Hex Shank

Description:
6-35MM Titanium Coated Step Cone Drill Bit  13 Steps Hex Shank
Specification:
Material:High speed steel 4241
Size: 6-35 mm(6,8,10,12,16,18,20,22.25,28,30,32,35)mm
Shank:6mm(dia),30mm(L)
Total:110mm(L)
Allow 1-3mm measurement error.
Features:
1, The ladder of its unique structure, a bit can open a variety of specifications of aperture.
2, Do not need to use center punch, compared with the ordinary twist drill is not easy to be broken.
3, Deburring, chamfering, elliptic hole enlargement, twist drill, the function of them  was unable,but it is possible.
4, The use of tools: drill, bench drill.Work while water cooling, can effectively extend the service life of drill bit, recommend drilling rate of 250-250 RPM.
Package included:
1x Hex Titanium Step Drill