SRAM PG820 Bicycle Cassette Review Posted by GiantPandaisy July 23, 2018 in Drivetrain Components Intended use: derailleur gears Cassette-Build: cassette Cassette-Number of Gears: 8 Intended use: derailleur gears Material: Steel Cassette: Build: cassette Number of Gears: 8 Cycling Outdoor Recreation Parts & Components Sports & Outdoors SRAM