The Old School BMX Mongoose Pro Class Disc 42 Tooth Chainwheel is a vintage bicycle part designed for BMX bikes from the old school era. With a classic black color and a model name of Pro Class Mongoose, this chainring is a stylish and authentic component for those looking to maintain the vintage look of their bike. Its 42 tooth design and durable construction make it a reliable choice for riders looking to upgrade or replace their current chainwheel for a retro aesthetic.