RMT 4608 D and RMT 4611 D Rivet Busters are low weighted but heavy-duty powerful hammers with teasing throttle. They are available with D-Handle with an inside trigger. Both models also have stepped cylinder design to prevent accidental ejection of the piston from the cylinder. These busters are used for removing rivets and in metal and concrete applications, including demolition and bridgework. Piston stroke of RMT 4608 D is 8" whereas, for RMT 4611 D, it is 11"