Made of high-quality tool steel.
Tool Holder Bushing for universal use on CNC turning machines to adapt a wide variety of boring bars, drills, reamers, and shank-type tools.
Hardened and precise ground to the highest concentricity.
OD tolerance is within H6 and ID tolerance is within H7.
When clamping down with screws onto the shank of cutting tools, it's best to clamp down only on the front end of the bore. If clamped down onto both the front and rear end of the shank, it may cause the shank to break since the precision ground bore ends at the midpoint of the bore depth.