Quick change tool holder is a main accessory of machine tool, it consists of tool holder and many kinds of tool holders, according to the processing requirements of workpieces, the corresponding tool holders are selected to finish cylindrical facing, end facing, cutting, drilling, boring, boring, as well as other processing. It realizes to mount the tool outside the machine tool, it has quick tool exchange, high precision, strong rigidity, etc. It is satisfactory accessories in place of square turrets. Features: Accuracy: Designed to ensure repeat accuracy. Quickly and easily installed on a motor lathe, bench or lathe for a wide range of operations. M-10 stud size and perfect for most mini machines, although modifications may be required for some machines (sleeve or a new center rod for a small hole may be required). Reduce setup time: Instant change from one operation to another. Fully interchangeable with Aloris, Dorian, Phase II, Yuasa, and most other manufacturer components. All working parts are precise and hardened. Completely sealed for maintenance-free operation. Rotation: The unmatched rigidity of this tool post and holder ensures smoother turning without chatter or vibration. Drilling: Allows you to drill with the power of your machine, instead of manual work or tailstock. The hard, easily centered, cuniform tool post design. Specifications: Material: Steel Color: Black Lathe Swing: 6-9" Application: Turning Tool Use: CNC Machine Tool Accessories Type: 250-000, 250-001, 250-002, 250-004, 250-007, 250-010 (Optional) Tool Capacity: 250-000: 1/2" Cuniform type tool post 250-001: 1/2" turning tool holder 250-002: 1/2" boring, turning tool holder 250-004: 3/8" and 1/2" heavy duty boring bar holder 250-007: 1/2" parting blade tool holder 250-010: 1/2" knurling and turning tool holder Package Size: 145*80*100mm 55mm / 5.7 * 3.1 * 2.2in Package Weight: 250-000: 739g / 1.6lb 250-001: 159g / 5.6oz 250-002: 157g / 5.5oz 250-004: 367g / 12.9oz 250-007: 243g / 8.6oz 250-010: 271g / 9.6oz Customs: 250-001: Quick tool change holder for lathe cutting tool bits, range up to 1/2 inch. This holder is suitable for working with Cuniform type 250-000. 250-002: V groove holding round shank boring bars and tools, as well as square tool bits for machine end face, external, cutting, drilling, etc. 250-004: Use straight shank drilling and boring, reaming, etc., equipped with a split sleeve to accommodate a small diameter boring bar. It grasps extreme rigidity. Smooth cutting, no chatter. 250-007: Use square tool to make slot off cutting, etc. 250-010: It can be used for knurling, if the square tool is used, it can process end face, extered cutting, boring, etc. Packing list: 1 * Tool post / tool holder