SHOULDER STUDS 40 MMSS-40C$296.54PriceQuantity*SelectQuantity*Add to CartLength40 MMItem weight2.52 KGFeaturesOversized tungsten carbide. Hardened and galvanized steel stud with shoulder. Large thread for secure anchoring. High durability. Lightweight. Easy to install and remove. Pack of 100, 200, and 1000. Prevents punctures in the tire.