CERAMICSPEED Sram DUB PF30a 29 mm Coated Bottom Bracket Cups Black is a high-quality bike part designed to fit SRAM DUB PF30a bottom brackets. These cups are made with a 29mm diameter and have a protective coating that ensures they can withstand harsh weather conditions and are resistant to corrosion. The black finish adds to the overall appeal of the bike's aesthetics.These bottom bracket cups are made by CERAMICSPEED, a well-known manufacturer of cycling parts. They are designed to offer smooth and efficient performance when used with a compatible bike. With their unique design and construction, these bottom bracket cups offer low friction and reduced drivetrain noise during rides. The use of high-quality materials also makes them durable and long-lasting.CERAMICSPEED Sram DUB PF30a 29 mm Coated Bottom Bracket Cups Black is an excellent investment for anyone looking to upgrade their bike's bottom bracket. They offer superior performance and durability at an affordable price, making them a popular choice among cyclists.