PNEUMATIC INSERTION TOOL FOR AUTOMOBILE STUDSCST-1117CA$566.99PriceQuantity*Item weight1.70 KGFeaturesTungsten carbide. Galvanized hardened steel or aluminum stud. Good durability. Lightweight. Easy to install using an insertion tool. Pack of 1000.ApplicationsWinter tires with pre-molded holes. Tire manufacturers indicate the correct number of TSMI studs to use on the tire sidewall.