Product Details:Lightweight alloy lever is broad for easy adjustment,High-strength 2014 aluminum collar extensively milled for minimum weight,Stainless steel axle for tensile strength,Just 52g – ideal for securing dropper posts,Available to fit 31.8mm and 34.9mm seat tubesKey Features:,Made for XC, trail and racing,Lever: Aluminium,Axle: Stainless steel,Collar: 2014 Aluminium,Inner Diameter: 31.8mm/34.9mm,Weight: 52g (31.8mm),.Reliability: Controltech USA knows the combination of sound engineering and high-quality materials practically guarantees the lifelong performance you expect. They never compromise our designs at the expense of low-quality materials. They use only premium grade raw material of aerospace quality.Ingenuity: Controltech is, and always has been, a global leader in component design. The state-of-the-art manufacturing technology would be nothing without the cutting-edge innovation of our Global Research & Development Team.Quality: A precise, unflinching view of manufacturing tolerances and meticulous craftsmanship are the hallmarks of Controltech components. Craftsman-level alloy welding and carbon layup are hallmarks of our designs. Plus of course, the use only premium-grade raw materials in the first place.Value: Though the greatest innovation takes place on the cutting edge of material science, manufacturing processes and product design, there’s such a thing as ’trickle down.’ Today’s no-expense-spared prototype is tomorrow’s easily-obtained standard. ControlTech work hard to create a range that covers every riding style, every rider and every budget – without ever sacrificing class-leading performance.