1. According to the needs of the workpiece, the corresponding tool holder can be to process outer circle, end face, cutting,knurling,drilling reaming, boring, etc. 2. The tool holder is installed on the tool holder by swallow-tail groove. It has the characteristics of fast tool changing, high positioning accuracy and so on. 3. The tool holder is the main accessory of ordinary small lathe. It is composed of one tool holder and several cutter clips. According to the need of machining workpiece, the corresponding tool holder can be . It can be used for machining outside circle, end face, cutting, knurling, drilling hole, boring, etc. 4. With a variety of sizes of drill bits, turning and finishing tools can be locked together. 5. accurate grinding and hardening. Turning and trimming tools can be locked together (save time and effort when changing operations). Installed on engine, worktable or turret bed quickly and easily, suitable for all kinds of operations from accurate machining to heavy cutting. Item Type:Tool Holder Holding Range:3/16 inch~1/2 inch Color: Black Material: steel Package Contents: 3 x Quick Tool Change Holder Only the above package content, other products are not included. Note: Light reflection 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.