Sixpack racing standard top capthis high quality top cap features a robust al7075 alloy construction, which makes it perfect at handling all the knocks and bumps associated with long days in the saddle. Sixpack racing has also put this model through a cnc machining process, which shaves off any unnecessary weight without sacrificing strength. This means that you'll benefit from its exceptional durability without worrying about adding any excess grams to your ride. Coming complete with laser etched graphics, this is a great choice of upgrade for protecting your chain and it looks as amazing as it performs.features material cnc machined al7075 alloy finish anodised with laser engravingsteerer diameter 1 1 8includes ahead screw m6weight 16gbuy sixpack racing components from chain reaction cycles, the world's largest online bike store.