The aluminum alloy CNC is integrally formed, with a tooth loss design, and precise gear shifting.Vacuum electroplating silver, three-layer vacuum electroplating, rust-proof and dust-proof are greatly improved.CNC hollow design, lighter weight, hollow out mud.This 11 speed cassette is an ideal choice for mountain bike riders who want the simplicity of a 1x11 drivetrain, yet still, have a wide range of climbing gears.Offering you great value for money, it enables you to clean up your handlebars and frame by losing the front shifter and mech, all without the expense of an expander sprocket.Note: Under the premise, it must be matched with conventional cassette hub bodyModel: Road bike flywheelMaterial: Chrome-molybdenum steel (nickel-plated surface)Speed: 11 speedGear ratio:11-speed 34T: 11-12-13-15-17-19-21-23-25-28-34T (Silver 372g)Color: As pictured11-speed, compatible with SHIMANO 105 5800 ULTEGRA 6800 6870 R7000R8000 and SRAM, Suntech sensah, LTWOO blueprint, microshift and other 11-speed road kits (note that it must be a Japanese standard HG cassette hub freehub)Package:1*Variable speed Cassette