since Cobralinks are well-known and well-regarded (and pricey) The hardened stainless steel links cover seven strands of top-quality aircraft cable, which give them good flexibility combined with, according to Cobralinks, "the strength of a hardened steel bar." Installation is fairly straightforward--just slide the links through the Cobrahead and snap the lock into a substantial-looking key lock. this thing is heavy 10 pounds plus 6 foot long and is 1 inch in diameter and its chrome finish is very nice