General description The AlwaysH 1.5-13mm Self-Tightening Keyless Drill Chuck is designed for convenience and efficiency in your drilling tasks. Its keyless spindle allows for quick tightening and loosening, making it easy to switch between bits. Constructed from high-quality steel, this chuck is sturdy, durable, and rust-proof, ensuring long-lasting performance. Technical specifications Self-drilling chuck size: Ø 1.5 - 13 mm Compatible bit sizes: 1/16 inch to 1/2 inch Drill chuck ratchet dimensions: approximately 75 x 43 mm Thread type: 1/2''-24UNF Other information A reverse thread screw is included.