WARM TIPS - Our seat belt extender is suitable for seat belts with a buckle width of 2.1-2.2cm and a buckle depth of more than 3cm. Before buying, please make sure that our seat belt extender meets your requirements. ULTRA DURABILITY MATERIAL - Our seat belt buckle extender is a rigid belt with metal buckle tongue, high performance and super tensile strength. It can withstand 3500 pound of tensile strength, is not easy to break, and is safer. Made of stainless steel and plastic, it can be inserted repeatedly without fading or stationary. Not easy to break, safer. ADVANTAGES - Simply click in the belt to add about 10 inches to the existing belt system, very simple to use. WIDELY APPLICATION - Extender is designed to provide safety when original vehicle belt is not long enough. Suitable for most vehicles. Safe to use on Baby and Infant seats. Surface is comfortable and soft, feeling good, not easy to hide grey, easily washing. Increases the size and improves comfort of your existing seat belt. Delicate appearance, attention to detail, to provide the safety of the children. Deal for use with big people, pregnant women, fire fighters and service men with bulky equipment belts, those with limited mobility and range of motion. Car Seat Belt Extender Material: stainless steel and plastic Lock Tongue width: 7/8 inch Metal Tongue The bolt width is 2.1cm. Total length: 10 Inch Colour: Black Packs: 2pcs Notice: Different cars are equipped with various belts, check the width of the belts metal tongue, it should be 7/8. Please make sure that the car seat belt extension size are matching your original car seat belt extension before you get it