Product description
Shank: twist
Finish: black
Length: 10 to 203mm
Diameter: 2 to 19BWG
Material: middle carbon steel C45, C50 and C55
Length: 20 to 200mm
Diameter: 2.0 to 6.0mm
Hardness: HRC48-52
Head: countersunk, oval countersunk
Finish: polished and black
Shank: twist, smooth, strip, groove, interval groove and ring
Point: long or short diamond point
Packing: by box or carton, according to customers requirement