... 4", 3/4" to 1" available material:45#carbon steel &CR-V socket set universal joint1/2" to 3 ... /4", 3/4" to 1"Material: carbon steelOur company can provide 12.5mm(1/2"), 20mm ... (3/4") series sleeve wrenches with 9 pieces,15 pieces, 21 pieces, and 26 pieces, 27 pieces in metric ... and other tools . If you are interested, please contact me as soon as possible. universal joint socket set with carbon steel