Hign-concerned Chemical:None Origin:Mainland China Features: OOTDTY brand new and high quality Provides a more upright, comfortable riding position by raising diameter handlebar. Make the rider have a more comfortable cycling posture and effectively reduce long-distance ride fatigue. CNC-machined from high-strength aluminium alloy, Premium quality, anodized surface finish. The handlebar riser also makes riding while standing less tiring, which is of tremendous to taller riders in particular. The overall result is a noticeable increase in stamina and concentration. Long stretches on the motorway are less nerve-racking, and even fast, difficult off-road sections are easier to handle. Easy to fit in minutes. No need for long cables or brake cables! Fits on original handlebar. Specifications: Material:Aluminum Alloy Size:As Picture Shown Color: Black/Red/Silver MDL3517: Increase 38mm Backward 18mm Pipe clamp aperture 22mm MDL3517B: Increased 40mm Backward 18mm Pipe clamp aperture 28mm Accessories: 6mm Allen wrench, 4 M8x25 Allen screws, 4 M8x20 hexagon socket screws Package Includes: 2x Handlebar Riser Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.