Type C Toolholder Bushing 1-3/4" OD x 5/8" ID Designed with a long slot for direct tool clamping for the positive alignment of the tool cutting edge / Can be used for a variety of set screw configurations found on CNC lathe boring bar holders / Precision ground C Type Tool Holder Bushing 1-3/4" OD X 5/8" ID Made of high quality tool steel. Tool holder bushing for universal use on all CNC turning machines to adapt a wide variety of boring bars, drills, reamers and shank type tools. Hardened and precision ground to the highest concentricity. Compare to common brand part numbers 42054726, 3900-2925, and TBC-17-0625-B We are experts in applications.   If you have any questions feel free to call or message us. We will be happy to answer any questions.    If you need inserts for this bar, we can help choose suitable options Feel free to touch base with any questions.   We are a full line industrial distributor selling tooling, workholding and abrasives since 1999.   We are experts in managed inventory, machine shop erp solutions and machine tool cyber security (ask us about E-matix). Daxer Tool 15211 Springdale St Huntington Beach, CA 92649