KDK model 150 quick change toolpost and 7 tool holders. Nice unit works well clamps strong and repeats. Comes with 4 holders 1-102 1-104 1-105 1-5B Precise KDK Style 0, 100, 150, 200 Series Quick Change Tool Posts Interchangeable with KDK-0,100, 150 & 200 tool posts. All working parts are hardened and ground. Dovetail is 1.75 T-Slot nut & Mounting bolt not included.