The the seatbelt clip is 0.83 inch(2.1cm), please check your buckle 's size and compatibility before purchg. For your pet's safety, do not attach the Kihappy Dog Car Seat Belt to your dog's collar. Attach it to a secure body harness. By connecting your pet to a body harness instead of it's collar, you will secure your pet from sudden stops, turns and accidents while also protecting its neck from unnecessary strain. Specifications: Width: 0.82 inch(2 cm) Adjustable Length: 19.7-29.53 inches (50-75cm) Clip Width: 2.1 cm Pet Weight Capacity: 110 lbs Accommodating both large and small dogs, the adjustable length of the Kihappy Dog Car Seat Belt (ranging from 19.7 to 29.53 inches) gives you the freedom to determine how much your pet can move about. And you get 2 belts in every pack. Bring your dog along without the worry of endangering your pet or risking any driver distractions. Package Content: 2 Kihappy Adjustable Pet Car Seat Belt?LIFETIME GUARANTEE? The Adjustable Pet Dog Safety Seat Belt is 100 Customer satisfaction guaranteed with money refund. We will replace or refund If you have any problem for Adjustable Pet Dog Vehicle Harnesses. ?Fits Most Cars? The dog car seat belt clip is 0.83 inch, which is fits with most cars. And please check your car buckle's size and compatibility before purchase. Note: For your dog's safety, it is recommended to use the seat belt leash with dog safety harness than pet collar directly. ?SAFE AND ADJUSTABLE? The pet seat belt with adjustable strap and superior buckle (will not loosen over time) can be adjusted from 19.57 inch to 30inch. And your dog will be secure in the backseat while giving him her room to move around and stay comfortable. Perfect for small to large dogs. ?FREEDOM TO CHANGE POSITIONS? the dog seat belts keep your dog from jumping into front seat while you are driving. Your pet is able to lie down, stand up or sit comfortably without pulling or getting tangled up. It also makes the dog safe as they cannot fall off the seat, no more distracting you. ?Excellent Safety Durable? Constructed with strong, premium quality nylon fabric bungee with buffer damping design could protect your dog from sudden brake or sharp turn, the dog safety belt keeps your dog from going reduces the risk of choking injuries.