ILSCO ClearChoice Splicer/Reducer, Type SPA Dual Rated, Aluminum/Copper Conductor, 10 AWG to 350 kcmil Conductor, 2 Screws, 2000 V AC, Specifications: 5/16 in Hex, 11/16 in Dia Screw, 90 deg C, Aluminum, Electro-Plated Tin, 2.468 in L x 1 in W x 1.25 in H Dimensions