Blackburn Type ADR-ALCUL Single-Conductor, 1-Hole Mount, Conductor. Wire range 14 AWG-2Str, Length 1-5/32 in., Width 1/2 in., Height 9/16 in., 1/4 in. Bolt Hole. Made of Tin-Plated Aluminum. Blackburn Type ADR-ALCUL Single-Conductor, 1-Hole Mount, Conductor. Wire range 14 AWG-2Str, Length 1-5/32 in., Width 1/2 in., Height 9/16 in., 1/4 in. Bolt Hole. Made of Tin-Plated Aluminum.