English name: air ratchet wrench Definition: powered by compressed air, to tighten or loosen the bolt, nut, a ratchet and pawl mechanism rotation impact wrench socket straight type air tools. Model editing Example: JLBL-3810106: pneumatic ratchet wrenches, socket sizes 3/8 inches, number 1 pawl, Ratchet handle, aluminium handle, No. 06, No. 01 products.