1. According to needs of workpiece, the corresponding tool holder can be to process outer circle, end , cutting,knurling,drilling reaming, boring, etc.2. The tool holder is installed on tool holder by swallow-tail groove. It has characteristics of fast tool changing, high positioning accuracy and so on.3. The tool holder is main accessory of ordinary small lathe. It is composed of one tool holder and cutter clips. According to need of machining workpiece, the corresponding tool holder can be . It can be used for machining outside circle, end , cutting, knurling, drilling hole, boring, etc.4. With a of sizes of drill bits, turning and finishing tools can be locked .accurate grinding and hardening. Turning and trimming tools can be locked (save time and effort when changing operations). Installed on engine, worktable or turret bed quickly and , suitable for all kinds of operations from accurate machining to heavy cutting.250-001 Tool Holder:Model Number: 250-001 Turing and Facing tool holderTool bits range: up to 1/2inchMatched Tool Post: 000 Wedge type Tool PostCan't use with Mini Aluminum Quick Change Tool PostFor use with 0XA tool post 250-000 up to 8inch swing. Securely holds up to 1/2inch square diameter tool bits Interchangeable with for Dorian, Aloris, and Phase II series mini tool posts.250-002 Tool Holder:Holding Range:3/16 inch~1/2 inchColour:blackMaterial:steelPackage Contents:2x Lathe 250-001 Tool Holder1x Lathe 250-002 Tool HolderOnly above package content, other products are not included.Note: Light and different displays may cause color of item in a little different from real thing. The measurement allowed error is +/- 1-3cm.