Blackburn® Mechanical Connector, Type ADR-ALCUL Dual-Rated, Aluminum/Stranded Copper Conductor, 6 AWG to 350 kcmil Conductor, 3/8 in Stud, 1 Bolt Hole, 1-1/8 in L x 1-1/8 in W x 1/4 in THK Tongue, Straight Tongue, 600 VAC, 1-Conductor, Socket Screw, Aluminum, Tin Plated, 2-1/4 in L x 1-1/8 in W x 1-1/4 in H