1. Quality Material Made from spring steel, our ER11 spring collets are designed to withstand rigorous daily use. The selection of materials ensures lasting durability and consistent performance essential for demanding CNC engraving and milling applications, making them an ideal choice for professionals. 2. Precision Performance These collets feature fine craftsmanship with elasticity and precision. Whether you're engaged in intricate engraving or detailed milling tasks, this set provides the accuracy required for precise machining, enhancing your work quality and minimizing errors. 3. Easy and Secure Installation For effortless use, the collets need to be placed into the collet chuck nut before inserting into the spindle. This secure installation ensures clamping performance and reduces the risk of slippage during operation, enhancing safety and efficiency in your work setup. 4. Individual Protection and Identification Each collet is individually packed in a protective case with a clear label for easy identification and organization. These separate protective cases prevent damage during storage and transportation, ensuring each piece remains in condition until needed.