SP AIR SP-7220 1/4″ Heavy Duty Straight Die Grinder Ergonomic design cushioned grip handle. Rear Exhaust with built-in power air regulator.Contains a safety throttle lever with direct drive motor with graduated trigger. Free speed rpm – 20,000Length – 6-7/8″Weight 1.37 lbRequired PSI : 90Avg Air Consumption CFM =4air inlet size NPT : 1/4″hose size: 3/8″ Click Here. Double your traffic. Get Vendio Gallery – Now FREE!