Designed specifically for bicycles, wheels, backpacks and all other sporting gear, Feedback's Alpine Digital Scale is a precise instrument that weighs in 10-gram increments up to 55 pounds (25 kg.). Simply hit the mode button to read the measurement in grams, ounces or pounds. And there's a zero/tare button for accuracy. This handy scale can be held or hung from a hook, etc., or can be clamped into a bicycle repair stand. It's ruggedly constructed with a shock-resistant housing to hold up in any toolbox, too, while its vinyl-coated hook won't scratch your bicycle, wheels or components. The required 4 AAA batteries are included.