Quick Change Tool Post Category: Quick Change Tool Post Sets Quick Change Tool Post Series: CA Lathe Swing: 14″-20″ Quick Change Tool Post Type: Wedge Number Of Pieces: 6. Hex Key Size: 1/4 Set Screw Thread Size: M12×32. Please check pictures for more details. Set 1/4″ Hex Key Size 14-20″ CNC 6Pack CA 250-444 Wedge Quick Change Tool Post. Description: Made of high quality Alloy tool steel 40Gr which is forged and has longer life, not Aluminum. Precision ground and hardened Takes only a few seconds to change tools. High quality 10.9 grade galvanized screws which have 1 time longer life than others. Tool Post and Tool Holders No. 250-401 Turning Tool Holder, use tool bit 1/2 to 1 No. 250-402 Boring, Turning Tool Holder, use tool bit up to 1″ and round shank boring bars up to 13/16″ No. 250-404 Heavy Duty Boring Bar Holder, can use both 1 and 1-1/4 shank boring bars No. 250-407 Parting Blade Tool Holder, use 7/8 high parting blades No. 250-410 Knurling and Turning Tool Holder, use short tool bit 1/2 to 1 Wedge type tool posts are precision engineered to assure repetitive accuracy. Advanced design provides built in quick tool changing versatility with positive rigidity to meet the most exacting working tolerances. Quickly and easily installed on an engine, bench or turret lathe for a wide range of operations, from fine precise work to heavy duty cutting. Maximum rigidity for chatter free performance. Completely sealed for maintenance free operations. Height adjustment screw allows accommodating various center height of different lathe chuck. 1PC 250-444 tool post holder. Quick Change Tool Post Series. Quick Change Tool Post Type. Set Screw Thread Size. Quick Change Tool Post Category. Quick Change Tool Post Sets. We do not provide international orders and remote state orders. We will do everything we can to give you a satisfying solution. We do our best to resolve any issue. So please talk with us and we will not let you down.