2manybikes

I tired to find the threaded ones for less on the net and everywhere I could, I never did. I buy the non threaded by the box at a Dept. Store. They come out to about 55 cents a piece. I think the threaded 12 gram equivalent is maybe 2 or 3 bucks each? The non threaded cartridge holder is a little bigger, but I don't mind. That way I don't mind using them. Sometimes I ride on the pavement for 10 miles to get to off road riding. I put my pressure down to about 35 for some off roading. Then one 12 gram cartridge for each tire, I can bring the tires back up to about 65 for the pavement ride home. For $1.00 or $2.00 with a friend. It's very handy.