Compact, lightweight designfor portability and fast, easy one-person operation. Develops 8 tons of hydraulic force for easy punching, even in 10-gauge stainless steel, depending on individual punch capacities. Quick Draw 90's right angle driver head rotates over 180 degrees for maximum flexibility in tight working areas. Can be used with non-round punches within the capacity of the tool (adapter may be required). U.S. Patent #6,772,521.