Mount equipment to a truck frame without drilling holes in the frame. Chassis Grabber base brackets fit Class 8 frames and include vibration-absorbing, glass-filled urethane inserts to ensure a snug fit. It's easy to move equipment from truck to truck because Chassis Grabber is removable and reusable. Fully adjustable, allowing trial and error and providing the perfect fit every time. Adjustable, universal fit for frames from 10" to 12" tall.