This item consists of 8 Vintage Clock Gears made of brass, steel and aluminum. Each gear has a unique design and varies in size from 1.625" (41mm) to 0.875" (22mm) in diameter. Two of the gears are flat with center openings, while five have an additional gear or ring on a stem. The largest has an internal spring attached to a ratchet which still works. The simple flat brass gear is marked "Boston" and "G-104". Manufacturers and exact ages are unknown. These Vintage Clock Gears are in very good condition with no significant damage or wear.