Morris Products 96020 Parallel Groove Clamp, 1 Bolt, Aluminum, 1/0 - 4/0 CU-AL Main, .373 - .563" Wire Diameter Main; 8-1/0 CU-AL Tap, .128-.398" Product description: Morris Products 96020 Parallel Groove Clamp, 1 Bolt, Aluminum, 1/0 - 4/0 CU-AL Main, .373 - .563" Wire Diameter Main; 8-1/0 CU-AL Tap, .128-.398"