Your gears will be grinding when you decide what project you want to use the Sprocket Gears on from the Idea-ology Collection by Advantus Tim Holtz for Advantus. Have fun adding this mechanical element to your altered art projects. Fasten them to your project with wire, brads or any other hardware you have! Included are 12 gears (4 each in nickel, brass, and copper). The size of the gears varies from 3/4 to 1.