cool, I know this information from first hand experience. Plastic spikes might be a smidge harder to track down time and again, but find a local running shop and if you keep buying they will start to carry them. I know guys on my track team that prefer plastic over the metal, just because they are a smidge lighter. But with the how light the metal is what is .0001 oz? ha.
"Originally posted by Hero: Pillz is a killer"
Scott Kellum Aproved