McGard wheel locks & lug nuts for boat trailers are made to the same high standards as our automotive line of products. For boat trailers with steel or alloy wheels with cone seats, simply replace one of the lug nuts with a McGard wheel lock, that's it. Our wheel locks and lug nuts are machined from high quality steel, through-hardened and then triple-nickel chrome plated. Every Mc Guard lug nut is garanteed for life not to rust, chip or peel. 1/2 - 20 cone seat wheel locks and lug nuts.
