General description The 1/2-20UNF keyless drill chuck is designed for versatility and ease of use, accommodating a wide range of drill bits with a collet size of 2-13 mm (0.04-0.51 inch). Its keyless and self-tightening mechanism enhances user experience by providing a secure grip on the drill bit, ensuring it remains firmly in place during operation. Technical specifications Collet size: 2-13 mm (0.04-0.51 inch) Diameter: 43 mm (1.69 inch) Length: 71 mm (2.8 inch) Connection size: 1/2-20UNF Installation Easy to install and disassemble, making it convenient for users. Usage Durable and long-lasting, suitable for extended use. Designed for various types of drill bits, making it versatile for different applications.