Product Description keyless quick-change chuck: The keyless quick-change chuck allows you to quickly and easily change the attachment on your generic rotary tool without changing collets. This is ideal when the application requires multiple attachment changes. Wide Application: Quick-change chucks are ideal for light-duty accessories including drill bits, sanding drums, polishing wheels, wire & bristle brushes, and cut-off wheels. Compatible with generic rotary tools. Keyless Chuck: A built-in spring ensures better attachment and prevents accessories from falling or flying out during use, which provides excellent stability. The quick-change chuck can hold various accessories from 1/32" to 1/8" shank sizes. Replacement 4485 brass collet metal nut kit: Why choose high-quality brass collet and metal nuts? Most of the collets used in the market are made of aluminum alloy. This material is soft and easy to wear and tear, so we use a better quality brass material. For plastic nuts, they will break during use, and the all-metal material solves this quality problem very well. The included wrench helps tighten the metal nut. Metal Nut: Made of metal material, sturdy and stable. The plastic nut on the market often break during use, but the all-metal nut solve this quality problem very well. They are more durable and safer than plastic materials. Brass Collet: Made of high-quality brass for wear resistance and durability. The brass collet offers a great improvement in precision and holds fine bits more firmly. It not only remains stable at high rotational speeds, but also increases working efficiency. Made of alloy metal, safe and durable. Three-petal clamp, the grip is more stable, and the concentricity is greatly improved. Built-in spring ensures better attachment and prevents accessories from falling or flying out during use. Made of nickel-plated brass, rust and corrosion resistant. Fine texture on the sides, we focus on details. It has strong adaptability and stability. Made of brass material. Solid and Durable, longer service life. The brass collet offers a great improvement in precision and holds fine bits more firmly. It not only remains stable at high rotational speeds, but also increases working efficiency. EXCELLENT TOOL FOR CHANGE ACCESSORIES Pay attention to measure the contrast size before buying. Quick-change chucks are ideal for light-duty accessories including diamond burr, grinding wheel, polishing wheel, carbide burr and wood carving bit and more. Hold accessories with 1/32 to 1/8 shank sizes. Note: Screw on the universal chuck, screw it to 3/4 to insert the accessory and then tighten it. Maximum RPM: 35.000 1/min Reasons To Choose Us Clients Foremost Service First Excellent Quality 100% satisfied Response Within 24 Hours Our rotary tool chuck sets are available in a wide range of sizes and quantities for greater compatibility. Effective solution to compatibility problem.