Epoch Hard Drill Bit EHSE□□.□-TH

A TH coating is applied.
The TH coating improves the hardness and heat resistance of the film, enabling longer tool lifespan and more efficient cutting.
Eliminate troubles with ultra-fine grain tough cemented carbide with excellent wear resistance.
The double margins of the 4 guides and the high center thickness body prevent runout of the cutting edge during cutting.
The 20° helix angle and concave cutting edge discharge cutting chips.
With a chamfered edge, stress concentration in blind holes and hole bottom corners is alleviated.