Formotion offers the largest selection (9 sizes) of Stem Nut and Fork Nut cover mounts. What a perfect place to mount a genuine Formotion clock or thermometer! Formotion Stem and Fork Nut Mounts will work on just about any bike made - simply measure your bolt size and order the closest match or oversize from our selection. Perfect for those steering stem nuts or fork nuts. Can be used with Formotion Electro Luminescent round clocks or thermometers. Measuring tip: Don't have a caliper handy? Use an adjustable wrench (like a Cresent™ Wrench) to measure tip to tip on your bolt and then simply measure the space on the wrench with a ruler.