.7 HP Motor for ulitmate stall resistance; Machined carbon fiber blades for lubrication free operaton; Highest precision engineering ensures 600,000 cycles of use; Internal silencer baffle reduces noise pressure level to 75 dBA; Precision needle bearings and gear case; Advanced ergonomic handle design with insulated coating for maximum operator comfort; Ported Throttle valve for precise variable speed control; Best for Continuous precision air frame work