Accusize Tools - 10 Pcs/Box Carbide Inserts CVD Coating CCMT21.51 Black/Yellow, 2200-1008 ANSI #: CCMT21.51 ( = ISO CCMT060204 ), Insert Style: CCMT, Insert Size: 21.51 IC: 1/4, Thickness: 3/32, Thru Hole: 7/64, Radius: 1/64, 7 degree Insert Grade: BPS101 Chip Breaker: MD Material: Carbide, Coating: CVD Al2O3 TICN, Machining Parts Material: Steel, Machining Process: Finish