Features: vibrotherm drivetm impact wrenches incorporate the completely new aircat design impact wrench mechanism (patent pending) the new mechanism reduces vibration levels by between 30%-40% and increased the life of the mechanism by 50% the latest patented aircat muffler system produces the characteristic aircat unmatched low noise levels the patented grip design provides the customary aircat operator comfort investment into tooling and materials and a triple injection molding processes enables aircat to produce cosmetic designs that are unmatched in the industry