.Material：Composites.
 .Jumbo Hammer.
 .Square drive: 3/8''.
 .Free speed: 8500r.p.m.
 .Handle exhaust.
 .Max.Torque: 500ft-lb / 650N.m.
 .Air consumption: 120L/min.
 .Air preasure: 6-8kg/cm2.
 .Air inlet: 1/4".
 .Weight:1.5kg.
 .Package size:15*18.2*7.2cm.