Blackburn® Mechanical Connector, Type ADR-ALCUL Dual-Rated, Aluminum/Stranded Copper Conductor, 6 AWG to 250 kcmil Conductor, 5/16 in Stud, 1 Bolt Hole, 1 in L x 1 in W x 1/4 in THK Tongue, Straight Tongue, 600 VAC, 1-Conductor, Socket Screw, Aluminum, Tin Plated, 2 in L x 1 in W x 1-1/8 in H