There are two kinds. They have the regular plain ones and the carbide ones. I used the plain for a season and they worked well. I've been using the carbide ones for a season and a half, and they are great. I'll always have them on my boots form now on. They wear very well, grip as good as one could want and in my mind are very inexpensive for the sure footedness, security and piece of mind the provide. You won't be dissappointed.

Jeff

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dead fish don't make reel music