USED - THE ITEM'S BUTTON PLATE/T-NUT WAS MACHINED. Quick Change Tool Posts, Two Styles - Piston and Wedge. Both are precision engineered to assure repetitive accuracy. Advanced design provides built-in quick tool changing versatility with positive rigidity to meet the most exacting 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. Piston type posts are economical, while the Wedge type posts are clearly ultra-precise. Both accept the tool holders and interchange with Aloris. The ...