$25 · Woody's Attack Off-road Tire Screws

These are designed for tires for cars and bikes. I used them in a pair of rubber boots. The tungsten tips are in like-new shape, as are the threads. They are Zinc coated, high-grade carbon steel with a brazed carbide insert. Total length - 13mm Thread length - 8mm Head diameter - 4mm Here's a link for how ridiculously priced they are, and also info about their applications. http://www.woodystraction.com/tire-screws-off-road-carbide-studs motorbike, ice, snow, grip, traction, stud, studs, tires, dirt bike, bikes, dirt, road, gs, offroad, snow riding, all terrain, atv, utv,