Ideal for professional woodworkers and craftsmen who require efficient accessories to enhances precisions and versatility in their daily milling and routing projects Crafted from carbon steel, this router collet nut high hardness and wear resistance, ensuring long lasting durability and stable for demanding woodworking tasks Perfect for applications ranging from fine edges trimming to deeply milling operations, this milling chucks accessory maintains secure grip and high concentricity at high speeds, tool slippage for accurate cut Designed with an innovative multi point locking mechanism and easy install threads, it enables quick tool changes and expands your equipment ' s functionality, boosting overall workflow efficiency and productivity Featuring a versatile set with multiple sizes including 6mm, 6.35mm, and 8mm collets and retaining rings, it provides universally compatibility with most routers and engravers, eliminating the need for additional modifications or adapters, Manufacturer: JSGHGDF