100 Pcs 12mm Stud Screws for Auto Car SUV ATV Anti Slip Tire Snow Traction Features： 1、This kind of screws are suitable for most of tires and add ultimate off-road capacity to your ordinary ATV, UTV or 4X4 vehicles. It brings a good anti-slip property for your tires. 2、Made of hard metal, these kind of tire stud screws are strong and durable in use. 3、It has a low ground pressure and it is environmentally with minimum impact. 4、It is easy to install with certain drill and can match well with your vehicle tires. 5、Please choose appropriate size of new studs in the installation process in terms of the depth of tire thread. Specification： The new style screw in tire studs can be easily installed and removed without professional tools, it can also be disassembled according to the reason, When not in use, it could be removed lightly and stored for using again in th following season. Choose appropriate size of new studs in the installation process in terms of the depth of tire thread Features: This kind of screws are suitable for most of tires and add ultimate off-road capacity to your ordinary ATV, UTV or 4X4 vehicles. It brings a good anti-slip property for your tires. Made of hard metal, these kind of tire stud screws are strong and durable in use. It has a low ground pressure and it is environmentally with minimum impact. It is easy to install with certain drill and can match well with your vehicle tires. Please choose appropriate size of new studs in the installation process in terms of the depth of tire thread. Specifications: Material: Metal Color: Silver Item Size: 1.2 x 0.4cm/0.47'' x 0.16'' Diameter: 0.2cm/0.078'' Item Quantity: 100 pcs/bag Package Weight: approx. 74g Installation: Drill (using a very small bit) down from the center of chosen knob into the tire. Drill a screw up from inside to out. If the angle isn't perpendicular to the tire, it will stick out one side or the other. Do one hole and screw at a time.  Put duct tape over the screws on the inside of the tire. Sometimes it is best to use two layers of tape. Note: It is easy to install, but professional installation is highly recommended. Package Included: 100 x  Tire Stud Screws 1 x  wrenches Package List： 100 x Tire Stud Screws 1 x wrenches