Made of hard alloy, super durable. Easy to install; compatible with various tires when used with the appropriate drill bit. Can be gently removed and stored for future use. Features low ground pressure, environmentally friendly design with minimal impact. Can be installed on shoe soles to prevent slipping on ice. Suitable for most tires, providing increased friction for trucks, motorcycles, off-road vehicles, and more, enhancing traction performance. Type: Tire Stud Screws Size: Approximately 4x12mm Application: Trucks, motorcycles, off-road vehicles, shoe soles, and similar uses Practical function: Screw-in tire studs improve friction between the tire surface and the ground, enhancing vehicle stability during operation. Ideal for driving or riding in snowy conditions. The compact size also makes them suitable for snow boots, supporting activities such as climbing, hiking, and camping with reduced risk of slipping or falling. New-style screw-in tire studs allow for easy installation and removal without special tools. Can be disassembled as needed and lightly removed when not in use for storage and reuse in subsequent seasons. Select the appropriate stud size based on tire tread depth during installation. Installation and removal can be completed in under one hour using basic hand tools. Economical solution for enhancing off-road capability on standard ATVs, UTVs, or similar vehicles. Color: Silver Material: Metal Package Contents: 200 x Tire Stud Screws 1 x Wrench Note: The package includes only the items listed above. Other products are not included. Due to lighting effects and differences in display screens, the color of the item in the photo may vary slightly from the actual product. Measurement error allowance is +/- 1-3 cm.