... is composed of the cutter-cartridge body and the tool-holder for various enlarging boring and reaming, etc. The height of tools ... -matching, quick tool-changing, great precision in positing and great hardness etc.Each set includes 1pc tool post,3pcs ... -B, 3pcs 502-B, 1pc 503-B17.26C1pc 501-C, 3pcs 502-C, 1pc 503-C22.55D1pc 501-D, 3pcs 502-D, 1pc 503-D44.75 ...