Detailed Product Description

HSS twist drill bit
Series: full series of ANSI, DIN, JIS, GB
HSS material: 4241, 4341, 9341, M2 (6542), M7, M35, M42
Craftsmanship: roll forged, milled, fully ground
Point: 118 degrees, 135 degrees split point
Surface treatment: bright finished, tin-coating, Zr-coating, black-oxide, nitride
Shank type: taper one, straight round, 1/4" quick change hex shank, 7/16" quick change hex shank

Packing:
Skin pack, double blister, single blister, sliding card, PVC bag, injection case, blow case, nylon bag, TPR case, Al case, metal box

HSS step drill bit
Material: HSS9341, HSS M2
Sizes can be upon customer's special requests.
Surface treatment: bright finished, tin-coated
Flute type: straight slot, spiral slot
Shank: taper one, straight round, 1/4" quick change hex shank

Packing:
Skin pack, double blister, single blister, sliding card, PVC bag, injection case, blow case, nylon bag, TPR case, Al case, metal box, wood case

Our featured 1pc structure quick change HSS bits are fully grounded to reach best concentricity of professional applications like regular HSS bits. The max torque and best concentricity are guaranteed.