earth rod clamps 1.Models:1/2'',5/8'',3/4'' 2.We can provide with brand mark on the clamps. Our factory produces a full set of rod to cable clamps.the models are 1/2'',5/8'',3/4''The clamps meet UL and CE standard.However, we can also bigger clamps of various weight,which is according to customer's special demand.The surface of the clamps is smooth and looks shiny.