Durable and strong 7075 aluminium track racing drop handlebar for oversized 318 mm clamp diameter 7075 aluminium is a high strength aluminium alloy commonly used in the aircraft industry making it the ideal choice to produce this lightweight strong and rigid handlebar with a specific track shape designed for speed and stiffness and wrist clearance when sprinting full oversized 318 mm diameter top section reduces unwanted flex under high load by increasing strength and rigidity weig