The NSI RC50 Heavy Duty Rebar Ground Clamp with Adapter and Screw grips on 1/2 rebar for heavy-duty wire grounding in harsh outdoor environments. The lay-in style clamp allows for continuous loop wiring and will fit conductors in the range of 8 SOL to 4 STR Additionally, the stainless-steel hardware and cast silicon bronze clamp body are made from tough, high-quality metals that provide durable performance in the harshest outdoor environments. UL Listed for direct burial, use this clamp to ground copper wire in any commercial, industrial or maintenance application where ground wiring needs to be connected to rebar. cULus Listed 467 for Grounding and Bonding/Direct Bury. Stock products you can rely onstock NSI.