I use 5mm and 7mm(depending on the track) omnilite ceramic pyramid spikes. They truly do wiegh 3 time less than steel, give ALOT of traction, they are better for tracks;they compress the track instead of cutting, and look funky with all the different colors. I’ve been told by my coaches, other reviews and friends that omni-lite ceramic christmas tree spikes will(or already have) revolutionize spikes for sprinting.:cul:
