Blanks Shank Hardness: 54-56 HRCBlank Hardness: 28-32 HRC CAT 40 View Products CAT 50 View Products BT 30 View Products BT 40 View Products Face Contact (CATP) 40 View Products Face Contact (CATP) 50 View Products Face Contact (BTP) 30 View Products Face Contact (BTP) 40 View Products HSK View Products KTI View Products PTI View Products