AIR DRILL Chuck Size: 3/8"(10mm); FREE SPEED:2100 rpm Length: 195mm; Weight: 1.3kg Features: 1.The body of handle coated rubber - user friendly design and anti-freeze increase outstanding work efficiency. 2.The rocking trigger design, easier to reversible operation. 3.The flange trigger design ¡V anti finger clipping 4.Improved the parts¡¦ material, accurate processing ¡V better performance and longer life time 5.Low noise ** 1/2" (FT-DU445) is available too.