SHANK TYPE - ROUND/HEX. CHISEL SHANK - 0.401". BORE DIAMETER -3/4"(19.05MM). PISTON STROKE LENGTH -1 5/8"(41MM). BLOWS 4500/min. OVERALL LENGTH - 5 1/4"(133MM). AIR INLET-1/4"(PT). AIR PRESSURE - 90 PSI. AVG.AIR CON-5CFM(143 L/MIN). NET WEIGHT -.5KGS(3.3 LBS).