pure steel thicken pure TPU steel studs material,no harm to your tire. TIRE CHAINS with special fastener, real materials, with strong anti-wear Engineering. it fits securely over your tires, and provides the perfect amount of traction and grip on slippery surfaces.No worry for outing in snow days UNIVERSAL USE FOR MOST OF CAR AND ALL SEASON: Have you question whether SNOW CHAINS suits for your car. Do not Worry, our Anti-slid CHAINS with Special Design it can be applied to all the models of the tire width It can be applied to all the models of the tire width 7.3-11.7(185mm-295mm) for Car, SUV, and Truck. Best for ice road, snow road and mud road. SAVE MONEY AND TIME: Tire Chains can be installed in accordance with anti-slip requirement, Snow Tire Chain with adjustable Tension Straps which makes mounting your unit to the tire a breeze adjustable. no need to take down tires, safe to use and affordable. easy to transport and stores in all standard vehicle storage compartments.Besides, we guarantee the quality of our chains, if your are not satisfy with it, 100%money back. WHAT YOU NEED: Winter is approaching, for the safety. you need this Double Fastener,Thickened TPU Anti-slip Chain to Insure a safe drive with less vibration and noise.Please Note: This product is not suitable for braking and sharp turns, iron wheels can not install this product. BUY WITH CONFIDENCE: Your satisfaction is our biggest concern. If you find any problem about the product, we will spare no efforts to deal with it and promise to provide replacement or refund. Thank you