AeroPro air tool of composite construction, for ultimate performance and durability. Has a soft-grip / warm-touch rubber handles for optimum comfort and minimum vibration. Lighter than traditional air tools. 90 psi operating pressure. 1/2" Keyless chuck. 6.4CFM Air consumption. SPECIFICATION: Operating pressure:90psi Air consumption:6.4CFM Speed:700rpm Keyless chuck:1/2" Air inlet:1/4" bsp