Swagman Bicycle Carriers Pick Up Adjustable Truck Bed Bike Rack 2-Bike rack mounts between your truck-bed rails; max load: 35lbs per bike The telescoping bar ensures Quick and easy no-drilling installation and adjusts to fit many truck bed sizes. The rubber end pads help to grip your bed rails and prevent scratches and abrasions Bikes are secured on the fork-mount blocks. These blocks include 9-mm, Quick-Release skewers that anchor your bikes to the rack. The 9 mm Quick release skewers secure your bike forks to the carrier The fork blocks can be repositioned along the main bar to ensure that your bikes are spaced Properly Made of solid steel construction