Specification: QUICK CHANGE BORING, TURNING & FACING HOLDER SERIES: CXA CONDITION: NEW Suitable for lathe Swing Diameter 13 - 18" (lathe center height 1.125 - 2.125" top compound surface to lathe center line) 250-302 Boring, Turning Tool Holder, use tool bit up to 3/4" and round shank tool bits up to 3/4" Precision ground and hardened.