The Leki Fitness Studded Traction Tip features a new tread pattern with six integrated carbide spikes for maximum traction on slick surfaces. The Leki Studded Rubber Walking Tip has a lifespan four times longer than conventional rubber tips and is sold as a pair.
I do a great deal of Nordic Walking and go through rubber tips like crazy. I decided to spend the extra cash and try the studded tips. They have have a different feel than do the regular tips, but once you get the hang of new feel... its no sweat. You do have to apply a bit more pressure to get a firm grip on asphalt, but you can reap the rewards of a better upper body workout. After several weeks... minimal wear and tear on the tips. Regular tips would be half gone by this time. So far so good.