Expert by Facom E030950 21mm x 3/8" Hex Socket

21mm hex socket which is made from chrome vanadium steel with a chrome finish.Has a 3/8" square drive to be used with a ratchet.The OGV® profile means that the torque is applied to the sides rather than to the angles of the nut or fastenerAdheres to standards - ISO 2725-1DIN 3124ISO 1174-1ISO 1711-1ISO 691Not suitable for machine operation or with power tools.