General description The 19Pc ER11 Spring Collet Set is a comprehensive collection designed for CNC engraving and milling applications. This set includes 19 pieces, featuring 15 different ER11 precision spring collets ranging from 1mm to 7mm, as well as 1/4 inch and 1/8 inch sizes. Additionally, it comes with 4 ER11A clamping nuts that have M14 threading, making it a versatile choice for various CNC carving milling machine chucks. Technical specifications Collet sizes: 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, 7 mm, 1/4 inch, 1/8 inch Material: 65 Mn spring steel Accuracy level: 0.02 mm (0.0008 inches) Usage This ER11 precision spring collet set is ideal for a wide range of tasks, including milling, drilling, tapping, and other machining operations. Its high precision and reliable grip ensure quality results every time. Other information