Mechanical Grounding Connector, 2 Parallel Cables to Rod or Pipe; Accommodates: #4 AWG ( Sol.) - 2/0 AWG (Str.); 1-3/8" to 1-1/2" Rod, 1-1/4" Pipe; #6 DURIUM Silicon Broze U-Bolt, Hex Nuts, and Split Lockwasher