1,Handlebar diameter: 31.8mm; Bar end diameter: 22.2mm; Appearance: UD Matte. 2,Length:800mm; Back sweep:9°; Rise: 15mm; Weight: Around 220g; Usage: Mountain bike. 3,Made of T700 carbon Fiber,Carbon Fiber compares to Aluminum Alloy: Lighter in weight. Much more beautiful in appearance. Brighter in Color. Stronger in pressure resistance. Anti-Shock. Has proper elasticity, improving your bicycle’s class in minutes. 4,Install the product correctly, please follow the specified tightening torque (4Nm);we recommend using a hexagon wrench to tighten the screw.Tighten the screws. Since it is made of carbon, we recommend tightening the body to support it by tightening with your hands. Cracks can occur when strong tensions occur. 5,Quality guarantee: any quality problem with this product,please contact us first,we will send you a replacement in free or fully refund your order,provide one-year warranty!