Used MRAD Pneumatic Shock Machine, Model 2424 (500) PAPC, Serial No 218 – 170, Table size 24 x 24, Weight 450lbs, Maximum specimen weight 550lbs, Maximum specimen height - no limit, Maximum specimen size 30" x unlimited, Velocity change, standard 330 in/sec (no load), 260 in/sec (400lbs load), Velocity change (air amp) 600 in/sec (no load), 500 in/sec (400lb load), Stroke 21" max, Cycle rate 8 cycles per second.