Clutch Baskets. ProX Clutch Baskets are precision machined from heat-treated aircraft billet 7075-T6 aluminum alloy to O.E. precision standards. Sophisticated hard-anodizing guarantees extended life under the severest racing conditions. Each kit comes with the necessary hardware to make installation a snap. Design: These clutch baskets are designed to maximize strength through "feature aligned grain flow" and utilize as-forged features that can only be produced using the ProX precision process. They are able to produce higher mechanical properties and resistance to impact and fatigue. Hard Anodized: All ProX clutch baskets are hard anodized to produce an ultra-tough abrasive-resistant surface which ensures a long life of smooth clutch operation through the elimination of wear on the sides of the clutch basket tabs.