The Brompton BWR 6-Speed Rear Sprocket Set is a high-quality steel gear set designed specifically for Brompton folding bikes. This set includes a 13-tooth and 16-tooth sprocket, perfect for achieving 6 speeds of smooth and efficient cycling. The silver, black, and yellow colour options match the classic Brompton design, while the durable construction and lightweight design make it a reliable and stylish choice for any cycling enthusiast. Perfect for those looking to upgrade or repair their Brompton's rear sprocket, this set is a must-have for any Brompton rider.