O-Z/Gedney Grounding Hub, Swivel, Series: GH Series, 1-1/4 in Trade, 4/0 AWG to 500 kcmil Conductor, Specifications: 3/8 in Hole, Malleable Iron, Hot Dipped Galvanized Finish, 1-7/8 in L x 2-1/2 in W x 2-11/16 in H Dimensions, O-Z/Gedney Grounding Hub ADDITIONAL DETAILS