Adjustments - Pet car seat belt can be extended from 15”- 22” (measurement includes Carabiner) for a broader range of movement. Dog tether isn’t compatible with Volvo, & not recommended for Ford trucks. Quick & Easy Installation – Pet seat belt clicks directly into the female seat belt slot. Easily switch the seat belt tether from car to car as needed. (seat belt metal tongue measures approx. 7/8” wide). Carabiner clip for Strength - Pet seat belt tether attaches to your dog's harness using durable, all steel, Carabiner clip. (For the tangle-free swivel option, please choose ‘Swivel Clip’ under Style). Reduces Distracted Driving - Kurgo dog seat belt tether keeps your dog in the Backseat and out of your lap while driving. seat belt buckle for dogs includes all steel hardware for strength & durability.