FSA K-Force Light CS-ED-8400 11-28T 11-SPD Cassette. Compatible with Shimano/SRAM higher end road groups. Very very low miles Like new. Retails for over $200.

　　"Featuring high performance and great durability, the K-Force has a large contact area to save alloy freehub bodies.Features-Heat-treated carbon steel cogs-Composite material spider-11-speed cassette sprocket-Electroless Nickel plated cogs and anodized black Lock Ring and SpiderItem Specifications-Drivetrain Speeds:11-Range:11-28-Weight:198g"

　　/Full-Speed-Ahead-Cassette-CS-ED-8400-11-28-60/dp/B07MBBZKL2