AXA Size 250-100 Set Piston Type Quick Change Tool Post Set for Lathe 6- 12 USA. 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. We will try to respond to all messages within 24 hours, however, this may take longer over the weekend. We appreciate your full five star feedback. Your satisfaction is our long term pursuit and up-most concern. We will try to answer most emails within 1 days.