This speedometer is an inexpensive low tech fun addition to any bike. Unlike the fancy expensive metal speedometers, this one has a plastic housing that will not rust. And unlike the tiny hard to read bike computers, this speedometer has a large 3 inch across easy to read face. Reads 0-50 (I got up to 20mph on mine today) with large easy to read numbers. And best of all, this speedometer has a resetable distance guage (odometer). You can start each trip from 0 and see how far you went; or leave it alone and see how much you bike in a week. Big easy to use reset knob on the side. Speedometer comes with handlebar mount, wheel gear, and cable. All you need is a screwdriver. Can be used on 26" or 27" bikes. Scientific accuracy is not guaranteed. Fun accuracy is guaranteed. Price is $14.99 Shipping is $2. and please add $1. if you want insurance. Personal checks preferred. Please reserve your speedometer by sending an email to: Lgon@herald.infi.net Dealors quote a quantity for wholesale.