Features: 1.Carbide Material: This tire spike is made of high strength carbon steel, aluminum, carbide, not easy to damage, no harm to the ground, and minimal impact on the environment. 2.Anti Slip and Durable: With rational design, it brings a good anti slip performance for your tires , and greatly enhance your safety. 3.Practical Function: The screw in tire studs can increase the friction between the tire and the ground, so as to improve the stability of the vehicle in the process of running. 4.Easy and Quick to Install: The tire stud screws are very easy to install with the included installation tool, just simply put the screw on the drill machine and then drill the screw into the tire. When not in use, it is easy to disassemble and store for reuse. 5.Wide Application: This kind of tire studs are suitable for most of tires and add ultimate off road capacity to your car, truck, also perfect for snow boots, bikes and motorcycle. Specification: Item Type: Tire Studs Material: Carbon steel, aluminum, carbide Specification: 100pcs pre pack (JX8 11 2) Color: Silver Application: Car Truck Bike Boot Motorcycle ATV SUV Auto Accessories PackageList: 100 x Tire Studs Note: This tire stud is used for all kinds of car tyre cleats with holes