These officially licensed GM locker side bed rails are a nicely sized round 1 - 34 inches tube. Constructed out of Putco NeverRust T - 304 stainless steel that is polished to look like your OE chrome. Manufactured from heavy - duty premium t - 304 stainless steel tubing is chromed to 44 hour CASS for stunning head - turning looks. Comes with 4 die - cast sanction ends that offer 500 lbs of compacity per end.Installing these high - quality bed rails is simple with no drilling and includes all hardware. Putco also backs all their American made stainless steel bed rails and chromed with a limited lifetime warranty. So if you want the best rated, officially licensed side locker bed rails on your pickup box, these are what you want. Sold in pairs with all the needed no drill bolt on mounting hardware.