The JET Tools 1/4" Air Screwdrivers, Nos. R8 JAT-650 and R8 JAT-651, have durable ball-bearing construction and provide control with variable-speed triggers. The Air Screwdrivers feature a quick change chuck that accepts standard 1/4" hex bits, allowing the tool to easily adapt to any manufacturing or fabrication need. With a positive clutch, the tools offer an ergonomic grip that absorbs vibration and reduces hand fatigue, and there is a top-mounted forward/reverse switch. The R8 JAT-650 is capable of 800 rpm while the R8 JAT-651 is capable of 1,800 rpm.