Pop-Up Locker When you want a custom look without drilling or expensive modifications, choose Putco Pop-Up Locker Side Rails. Putco Pop-Up Locker Rails install on your truck in minutes with easy no drill installation via stake pockets. Made from durable NeveRust stainless steel, the Pop-Up Locker Side Rails will add a distinctly custom look to your truck. Putco Pop-Up Locker Side Rails solid die cast construction allows for 500lbs. of tie down strength. The handy Pop-Up tie downs have four tie down locations to handle any type of truck cargo. Pop-Up Lockers are backed by Putco's NeveRust stainless steel lifetime warranty.