Extang 7940 Classic Platinum  Snap Tonneau Cover - fits Silverado/Sierra (6 1/2 ft) 99-06, 07 Classic (incl HD) TuffKlamps Offer Two Bow Height Positions Spring Loaded Bows for Quick Removal SnapStoppers Keep Snaps Secure When Tarp Is Rolled For Hauling ClickLock Corners Use Spring Loaded Stainless Steel Ball Bearings Instantly Secure And Release Tail Rail With No Tools