Stille was first to launch the double-action bone rongeur in 1872 and still manufactures the worlds finest rongeurs and bone cutters. The advantage with double-action instruments is that the surgeon is able to gently cut into bone tissue with a single hand. When cutting into bone with maximum leverage, double-action rongeurs increase the force applied to the cutting surface many times over. Stilles bone cutters do not use riveted joints, but are assembled using a precision screw. When it is time to sharpen the cutting surfaces the instrument can easily be taken apart and reassembled to ensure the optimal service.