These Heavy Duty Universal Spring Plates are designed to be used with 2 wide springs.
The top plate is 5/16 steel and the bottom (skid plate) is stamped out of 1/4 steel. RockJock Heavy Duty Spring Plates - CE-9031 These Spring Plates are built to withstand the most rugged off road abuse. Price listed is for a pair of plates. Semi-gloss black powdercoat finish;For use with 2 inch wide springs;Works with a 2 inch up to a 4 inch tube;Designed to be used with 1/2 inch U-bolts;5/16 inch thick main plate, boxed with 3/16 inch steel;California Residents: WARNING They have a built-on skid plate to protect U-Bolts.