qualified with international standards 1.outdoor grounding kits manufactured 2.used for protecting feeder cables & equipments this feeder clamp can hold three runs of cables of 1/4", 3/8", 1/2", 7/8", 1-1/4, 1-5/8 it consists of two parts , one is stainless steel bracket , the other is clamp , made of Polypropyleneour clamp has passed professional test . 7/8"GROUNDING KIT