Fuji FRH-6A-2 NPT Light Hammer. Fuji light hammers provide a controllable impact for riveting to reduce the effect of work hardening of the rivet or damage to the surrounding metal. These tools are easily adapted to perform other operations, such as cutting, ripping, shearing, punching and gouging with suitable chisels fitted. The Fuji light hammer locking handle is designed to reduce the risk of accidental starting of the tools. The handle is automatically locked when the operator releases the handle.