The original and patented tailgate gap cover ROK BLOCK XL bridges the gap between the truck bed and tailgate preventing the loss of materials such as gravel, dirt, mulch and sand. 7" width ROK BLOCK XL is compatible for select trucks in the U.S. market and for all trucks and utes outside the U.S. market. Must use for: Silverado (except EV), Sierra (except EV), 2021 and newer Ford F Series trucks with a hinge retainer bracket (see image), Ford Lightning, 2019 and newer Ford Ranger, Frontier, and RAM 2500 and 3500. Eliminates debris from falling into the bottom tailgate gap. Saves time and prevents damage to tailgate. MADE IN USA Use 4.25" width ROK BLOCK, search ASIN: B00BPE4AP6, for the following trucks: Colorado, Silverado EV, Canyon, Sierra EV, RAM 1500, Ford F Series except 2021 and newer with a hinge retainer bracket (see image), Ford Maverick, Hummer EV, Jeep Gladiator, Titan, Tacoma, and Tundra. Excluded Trucks (6) for both ROK BLOCK and ROK BLOCK XL: Ford with Pro Access Tailgate, Honda Ridgeline with Dual Action Tailgate, Hyundai Santa Cruz, RAM with Multifunction Tailgate, Rivian, and Tesla Cybertruck. For a drop in bed floor liner ROK BLOCK XL installs under the liner. Doubles as a tailgate seal preventing dust, fumes and water from entering in through the bottom tailgate gap when using a truck bed cap or tonneau cover. To seal the tailgate sidewalls, when using a truck bed cap or tonneau cover, install patented Ultimate Tailgate Seal with Taper Seal (sold separately, search ASIN: B00IPQWXZQ). Apply when the air and surface temperature is between 50° - 104°F (10° - 40°C). This product requires 25 lbs. of pressure to bond adhesive. 3M ST1200 tape adheres to all surface finishes including spray-on bedliners. For Utility Vehicles (UTV) get ROK BLOCK UTV, search ASIN: B0D435WZM4. For Toy Haulers and Trailers get ROK BLOCK TRAILER, search ASIN: B0F84LKBDG. The original and patented tailgate gap cover ROK BLOCK XL bridges the gap between the truck bed and tailgate preventing the loss of materials such as gravel, dirt, mulch and sand. 7" width ROK BLOCK XL is compatible for select trucks in the U.S. market and for all trucks and utes outside the U.S. market. Must use for: Silverado (except EV), Sierra (except EV), 2021 and newer Ford F Series trucks with a hinge retainer bracket (see image), Ford Lightning, 2019 and newer Ford Ranger, Frontier, and RAM 2500 and 3500. Use 4.25" width ROK BLOCK, search ASIN: B00BPE4AP6, for the following trucks: Colorado, Silverado EV, Canyon, Sierra EV, RAM 1500, Ford F Series except 2021 and newer with a hinge retainer bracket (see image), Ford Maverick, Hummer EV, Jeep Gladiator, Titan, Tacoma, and Tundra. Excluded Trucks (6) for both ROK BLOCK and ROK BLOCK XL: Ford with Pro Access Tailgate, Honda Ridgeline with Dual Action Tailgate, Hyundai Santa Cruz, RAM with Multifunction Tailgate, Rivian, and Tesla Cybertruck. For a drop in bed floor liner ROK BLOCK XL installs under the liner. Doubles as a tailgate seal for the bottom tailgate gap, when using a truck bed cap or cover. Apply when the air and surface temperature is between 50° - 104°F (10° - 40°C). This product requires 25 lbs. of pressure to bond adhesive. For Utility Vehicles (UTV) get ROK BLOCK UTV, search ASIN: B0D435WZM4. For Toy Haulers and Trailers get ROK BLOCK TRAILER, search ASIN: B0F84LKBDG. TIP: If you have a truck bed cap or tonneau cover and occasionally use your truck for transporting loose material then install ROK BLOCK XL over the tailgate bottom gap and install patented Tailgate Seal with Taper Seal on the sidewalls (sold separately, search ASIN: B00IPQWXZQ. MADE IN USA