1. Enhanced Security: Built-in springs maintain a secure connection, offering stability by preventing accessories from slipping or displaced during use, ensuring reliability and performance. 2. Achieve Enhanced Precision: Enhance precision for improved work efficiency with stable performance even at high speeds, leading to optimal results. The collet set is effective. 3. Long-Lasting Performance: Crafted from excellent brass material, this Drill Chuck Collet Set is strong and sturdy, suitable for long-term use. This set is very strong. 4. Travel-Friendly Design: Easily transport this Drill Chuck Collet Set in your tool bag, as its sleek design allows for compact storage and effortless mobility 5. Broad Use: This Drill Chuck Collet Set expands functionality by being fitting a variety of rotary tools, facilitating usage with drill bits, sanding drums, polishing wheels, wire brushes, and cutting wheels for versatile applications and ease of use. Enhance your drilling experience with this Drill Chuck Set. Its stable design ensures improved efficiency, making it ideal for long-term use. Compact size fits easily in your tool bag. Applicable: Can accommodate a variety of accessories from 1/32 inch to 1/8 inch shank size. Color:As Shown Material:Metal Package Contents: 2 * nuts 1 * chuck 20 * copper cores 2 * wrenches 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.