Pro vibe 7s handlebars compactthe vibe 7s compact handlebars are the ultimate lightweight and strong aluminium road racing drop handlebars made from 7075 aluminium which is commonly used in the aircraft industry and featuring oversized 31 8mm tubing the v7s handlebar reduces unwanted flex under load by increasing strength and rigidity featuresmaterial 7075 aluminiumoversized 31 8mm clamp diameter reduces unwanted flex under high load by increasing strength and rigidityfor further rigidity