Putco 49826 BOSS 2.5" Diameter Locker Side Rails for Super Duty Oversized Locker Rail with 2.5 inch tubes and castings Solid die cast construction on the bed rail ends allows for extreme tie down strength Easy no drill installation via stake pockets Stainless tubes are chromed to 44 hour CASS Tubes and rails are backed by Putco's NeveRust Lifetime Warranty