ITEM NAME:100Pcs 12-8-2 Wear-Resistant Sleeve Studs Car Atv Tire Anti-Skid Nails A4N7 100Pcs 12-8-2 Wear-Resistant Sleeve Studs Car Atv Tire Anti-Skid Nails A4N7 Item Type:Snow Chains Item Weight:0.1kg Suitable for model:ATV,Car,Automotive,Motorcycle This type tire studs can be easily installed with professional tools. But it needs the tire with hole.It will sitting tighter than the ordinary. 1. Pin of studs: 100% tungsten car