This is a New Chrome Reproduction of the 46 Tooth Vintage Schwinn 4 Hole Sprocket. Commonly found on Antique Schwinn Ballooners and Vintage Schwinn Middleweight Bikes. Vintage Schwinn Bikes like: Jaguar, Hollywood, Fleets, Typhoons, Fiestas etc. Nice Reproduction and Chrome, 46 Tooth, Typical Adult 26" Cruiser Bikes Size. Sprocket is for single speed bikes with 1/8" width chain. This part is Perfect for your Vintage Schwinn Bicycle Restoration or Custom Chopper Lowrider Cruiser Project.