... 3/4", 3/4" to 1" available material:45#carbon steel &CR-V socket set universal joint1/2" to 3/4 ... can provide 12.5mm(1/2"), 20mm(3/4"), 25.4mm(1") series manual sleeve wrenches, (1/2") sleeve wrenches with9 ... , 27 pieces in metric system andBritain system, 25.4mm (1") series sleeve wrenches 21 pieces and other tools . If ... contact me as soon as possible. universal joint socket set with carbon steel