AXA Size 250-100 Set Piston Type Quick Change Tool Post Set For Lathe 6- 12. No time wasted with shims. All working parts hardened and precision ground. Wedge type tool post are precision engineered to assure repeatability accuracy. Wedge type tool post Have the Maximum rigidity to get the chatter free performance. Suitable for lathe center height 0.6 – 1.75″ (top compound surface to lathe center line), such as: South Bend 9″ & 10″, Atlas 10 & 12″, Delta 10 &11 Nardini TT1000 & TT1200 and many other import lathes. Whole set includes one each of. 250-100 Wedge Type Tool Post. 250-102 Turning Tool Holder, use tool bit up to 1/2. 250-102 Boring, Turning Tool Holder, use tool bit up to 1/2″ and round shank tool bits up to 7/16″. 250-104 Heavy Duty Boring Bar Holder, use 5/8 and 3/4 shank boring bars. 250-107 Parting Blade Tool Holder, use 1/2 high parting blades. 250-110 Knurling and Turning Tool Holder. After the product is processed, it needs heat treatment and blackening treatment, so there may be some tiny scratches on the surface, but it will not affect the performance of the product. 1pc Tool Host and 5pcs Tool Holders. Thank you for your understanding. Feedback is very very important to us, if you have any questions, our Customer Service staffs will be very glad to help you. We will response in 24-48 hours to resolve the problems. We care about our valued buyers, and we will try our best to reply your emails. However, on weekends and holidays, there may be a delay in reply to your emails. Thank you sincerely for your understanding!