Features: No. 250-001 Turning & Tool Holder, use tool bit up to 1/2 inch. Made of steel , not Aluminum. Precision ground and hardened. Maximum rigidity for chatter free performance. Speed lathe operations 90%. Turning and facing tools can be locked together (saving time and labor when changing operations) Quickly and easily installed on an engine, bench or turret lathe for a wide range of operations, from fine precise work to heavy cutting. Specifications: Model: 250-001 Material: Steel Lathe swing: Up to 8 inch Tool bit capacity: up to 1/2 inch Color: Black Packaged included: 4 x Turning & Facing Tool Holder Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.