The Putco Boss Locker Bed Side Rails are a 2 1/2 in. diameter side rail made from Putco's NeveRust Stainless Steel. These rails are made to not only look good but do some hard work too, they have a 500 lb. tie down strength. That means that you can ratchet down your cargo and the rails will be up to the job. As for installation, the rails go right into your exisiting stake pocket holes so there is no need to drill and you will have them put on in minutes. These rails are backed by Putco's NeverRust Limited Lifetime Warranty so if they ever start looking less than perfect Putco has you covered.