For use with OXA tool post 250-000. 6-8" swing Holds 3/8" with bushing (1/2 diameter without bushing). Interchangeable with Dorian, Aloris, & Phase II OXA series mini tool posts. Grips bar with extreme rigidity; cuts smoothly without chatter Equipped with a split bushing to accommodate a boring bar of smaller diameter Precision ground and hardened Completely sealed for maintenance free operation. Package Including: 4PCS Quick Change TURNING & FACING Lathe Tool Post Holder (250-004) OXA #4. 4Pcs OXA #4 250-004 Quick Change Heavy Duty Boring Bar Tool Post Holder. If there is any ...