FIDANZA FLYWHEEL, ALUMINUM -- 10 Lbs, Made From Heavy-Duty 6061 T6 Aluminum, Features Improved Heat Dissipation And Weight Reduction, Comes With Friction Surface Made From 1045 Steel And Attached With Military Grade Aerospace Fasteners, Incorporates 1050 Heat Treated Steel Ring Gear That Is Pressed On And Secured With Grade 8 Button Screws For Maximum Durability, Utilizes A Stepped Dowel System To Ensure Dowels To Become Locked Into Place, Can Be Matched With Any Type Of Clutch Material, With Manufacturer's Limited 1-Year Warranty

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