Set of crows foot wrenches in ten common sizes from 10mm to 22mm for use with 3/8" square drive extension bar and ratchet, for improved access in confined areas. The flare nut head provides a firm grip for more torque without damaging the fastener. The wrenches are manufactured from carbon steel with a chrome, fully polished finish and are supplied on a tool rail for convenient storage, with holes for wall or toolbox mounting. Designed for use with 3/8"D extension. Sizes: 10, 11, 13, 14, 15, 16, 17, 18, 19, 22mm.Flare nut Hex (6pt) head. Provides a secure grip for reduced risk of fastener damage, with open jaw to fit around pipes & cables. Manufactured from carbon steel with a chrome polished finish. Supplied on a wall mountable rail (320mm long).