I bought this seat belt lead clip to replace part of a car harness that my large puppy chewed through. The old harness clipped round the car belt, and she used to get a bit tangled in it. This one is much better as it clips into where the end of the belt clips and allows her to turn around without getting ensnared by the harness. As a result she is less chewy, more settled and safer. I reckoned that at this price, even if she did chew it, I could afford to replace it.