Check the listing for details. A1 40Position Quick Change Tool Post Main Block 150-300mm Lathe 6"-12" Multifix. Condition: New. Listed at 180.00 USD. Lathe 40 Position Quick Change Tool Post size A1A1 Q.C.T.P (Some manufacturers and dealers call this model size A)Can be used on BV20, SINO210V,D240, CQ6125 bench lathe which turning diameter is from 150 to 300mm(6"-12")One set A1 includes: 1 X 540-100 tool post and locking wrenchDESIGN:1.Basic body is made of high-quality steelwhich is hardened and ground2.The tool holder is clamped against the basic body by an eccentric cam systemThe system allows a repeat accuracy of 0.01 mm with 40 possible angular positions of the tool holder.Application:Quick-change tool holders are characteried by their unlimited diversity in the use of lathe tools,drills,reamers and boring barsPLEASE NOTE- THIS LISTING IS FOR MAIN BLOCK ONLY WITH LOCKING WRENCH , WE ALSO HAVE TOOL HOLDERS THAT YOU CAN PURCHASE FROM OUR STORE TOO.