Continental's Easy Tape High Pressure Rim Strips come in sizes to fit 700c and 650c road rims and are made of a tough, elastic and waterproof, non-adhesive nylon. This makes them quick and easy to install. Just stretch them over your rims and let them snap in place! They are also made specifically for when you're running extreme pressures and can handle up to 220 psi. Each box contains a pair of rim strips.