Are you looking for reliability and pure performance for your road or gravel drivetrain? The FSA GOSSAMER crankset is an ideal choice. It is designed to provide maximum power transfer and reliable chain guidance regardless of the terrain. Key features Optimization for 1x systems: The design of the converter eliminates the need for a front derailleur, simplifies shifting, and significantly reduces weight. High compatibility: The converter is designed for Gossamer MY21 cranks and is fully compatible with 10/11-speed Shimano and SRAM drivetrains. Durability: Made from high-quality alloy for long-lasting performance and reliability even during aggressive riding. Specifications Material: Aluminum alloy BCD (Bolt Circle Diameter): 120/90 mm Number of teeth: 42 Number of holes: 4 Crank compatibility: Gossamer MY21 Drive compatibility: Shimano 10/11, SRAM 10/11 Discipline: Road, gravel Color: Black anodization