Draper Compact Air Ratchet - 3/8" Square Drive Made From Lightweight Aluminium 84126. Compact air ratchet with stubby yoke. Vibration level: 4.35m/s2. Fitted with a 4 - speed rear regulator, a middle exhaust and attached with a 1/4" BSP airline connector which connects with the 360° rotating air inlet, helping prevent air - lines from kinking when in use.