The hardness of it is about 89HRA. Stub Length. Will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.
eBay
Shank Length: 45mm. Hardness: Up to HRC70. 3,Mainly used in the pneumatic or electric-driven tools, the speed is generally 6000-50000 rev/min, clip positively while using, milling cutting mode is better, avoids reciprocating cutting.
eBay
Shank Length: 45mm. High product processing quality, high finish, can process out a various of high- for precision for mold cavity. 3,Mainly used in the pneumatic or electric-driven tools, the speed is generally 6000-50000 rev/min, clip positively while using, milling cutting mode is better, avoids reciprocating cutting.
eBay
.
eBay
eBay
Z6 double cut. (picture shows 10mm). Outstanding Quality Unbeatable Prices.
eBay
eBay
SDS plus drill bits havea special shank withkeyways tosupport theextra torque a SDS Plus drill provides. Narrow side edgesreduce resistance. The drill bit is not held solidly in the chuck, but can slide back and forth like a piston; it does not slip during rotation due to the non-circular shank cross-section, matching the chuck.
eBay