Fuji non-reversible type air motors are compact and light weight, yet sturdy and offer high power-to-weight ratios. As Fuji non-reversible type air motors are less likely to generate sparks (unlike brushes in electric motors), Fuji non-reversible type air motors are better suited for use in hazardous environments.The locking handle are designed to reduce the risk of accidental starting of the tools. The handle is automatically locked when the operator releases the handle. The built-in Sleeve Valve allows the operator to adjust the blow frequency by adjusting the throttle valve.