The Putco Oval Cross Rails for 1999–2007 Chevy Silverado/GMC Sierra 6'6" bed are rated up to 1,000 lbs of tie-down force and use chrome-coated stainless oval tubing with sturdy die-cast stanchions. They mount into factory stake pockets with supplied hardware and gaskets—no drilling—provide ample clearance for most tonneau covers, and are manufactured in the USA with NeveRust protection for long-term corrosion resistance.
Putco 03-06 Chevrolet Silverado - 6.5ft Bed (01-05 HD) Crossrails