Selftightening mechanism This selftightening drill chuck for taper applications provides an automatic, secure grip on tools during speed operation. It offers stable performance in CNC, lathe, or milling machine work, helping prevent slippage and ensuring consistent results without the need for a key. Comprehensive compatibility Engineered for general use with bench drills, radial drills, and drilling machines, this steel collet chuck is designed for long service life. It holds a wide range of tools, including woodworking drills and milling cutters, with a clamping range from 0.5 mm to 20 mm depending on the B10B22 model. performance material Made from grade steel, this selftightening chuck is built to withstand demanding daily use. It resists premature wear, delivers long service life, and provides reliable, consistent tool gripping under challenging conditions. Precise clamping range Each model offers a specific clamping capacity: B10: 0.5–6 mm B12: 1–10 mm B16: 1–16 mm B18: 1–16 mm B22: 5–20 mm These ranges cover a variety of drilling and milling requirements, ensuring the right fit for your application. Use scenarios Precision drilling on a benchtop or CNC setup with smalldiameter bits (0.5–6 mm) where fast, toolless changes and secure grip are critical for accuracy and productivity. Milling or drilling largediameter holes (5–20 mm) on a milling machine or heavyduty drill press, using a B22 chuck for robust, stable toolholding during speed operations. Woodworking or metalworking projects on bench or radial drills, where quick clamping, reliable grip, and longterm durability reduce downtime and maintenance.