X-Calibar Snowmobile studs are specifically designed to offer safety and traction for your track. Safety is often overlooked at the point-of-purchase. Common sense tells us the "ability to stop" is the definition of safety. X-calibar studs are specifically designed to work on all tracks. X-calibar studs are threaded all the way down for excellent performance on thinner tracks - so you can properly secure your stud. The X-calibar stud has a thin head and no shoulder which does not deform the track; which prolongs track life. X-calibar studs have an 80 degree tip for long life. The 80 degree tip doesn't wear down as fast as sharper tips and bites longer on ice and hard packed snow.