Grip Studs Screw In Tire Studs
If you have trouble with traction when riding on ice, snow, or mud, then here's something you'll be interested in. I've discovered that Grip Studs screw in tire studs are an excellent traction increasing option. Grip Studs are very affective with a long life time and high stud retention level.
www.gripstuds.com is the company's web address. Check them out! - I've heard about these. Do you screw them in by hand or some sort of tool I imagine? And do they screw into every knobbly?