ILSCO® ClearChoice® Splicer/Reducer, Type SPA Dual Rated, Aluminum/Copper Conductor, 6 AWG to 250 kcmil Conductor, 2 Screws, 2000 VAC, Specifications: 5/16 in Hex, 5/8 in Dia Screw, 90 deg C, Aluminum, Electro-Plated Tin, 2.312 in L x 0.875 in W x 1 in H Dimensions