Metal Sprocket Gears by Tim Holtz Idea-ology, 12 per Pack, Various Sizes, Antique Finishes, TH92691 Tim Holtz Idea-ology Three antiqued finishes: Nickel, Brass and Copper 3/4" (19mm), 7/8" (22mm) and 1" (25.4mm) Includes 12 sprockets per package Pivots freely for holding objects or parts together Measures between 3/4-inch and 1-inch