Magnum Truck Racks Truck Rack Accessory D Ring Side Mount 2 Pack Model 26001Magnum Truck Racks Truck Rack Accessory D Ring Side Mount 2 Pack Model 26001 When you need to tie down cargo, you need to know that it is going to stay put instead of making a big mess on the highway. Magnum's Sliding D Ring accessory is specifically designed for our Glide Track system. Because our sliding D Rings give you an easy install through the slots in the top and sides of your headache rack, you can easily adjust the location to where you need