The COL ER(636) ER40 collet is designed for precision applications with a gripping capacity of 9/16 inch. Manufactured by Field Tool Supply, this collet is made from high-quality materials, ensuring durability and consistent performance. Its ER40 design is compatible with various CNC machines, making it suitable for a wide range of machining tasks. The collet's dimensions are optimized for secure gripping, providing excellent stability during milling and drilling operations. It meets industry standards for quality and precision, making it an essential tool for professionals.