【Upgraded High-Strength Seamless Aluminum】Made from premium one-piece forged aluminum alloy, ONZILLO bike bar ends feature weld-free construction. Rustproof & corrosion-resistant surface survives harsh weather/off-road impacts 【Extended Ergonomic Comfort Design】Curved shape with textured finish reduces hand fatigue and absorbs road vibrations. 20% longer than other bar ends (16.2cm total length) for extended arm/shoulder comfort on long rides 【Flexible 180°Rotation & Inner/Outer Mounting】Adjust angles to match your riding style (climbing, sprinting, leisure). Unique inward mounting option adds secondary grip zone for climbing control.(Note: 1.shifter position adjustment required during inward setup.2.remove grips and slide bar ends inside handlebars for inner mounting) 【Universal 21.2-22.3mm Fit】Compatible with most handlebars (21.2-22.3mm outer diameter).Includes 4mm/5mm hex wrench for hassle-free outer mounting installation in <3 minutes 【Ideal for Cycling Enthusiasts】Effortlessly switch hand positions to adapt to any scenario – relax in an upright posture for long-distance comfort or grip firmly to engage core power during climbs and sprints. A perfect present for every rider Ergonomically curved design Precision-machined aluminium alloy body Hassle-Free Installation Length: 16.2cm / 6.37inch Weight: 150g (5.29 oz) / pair Ideal for: All-Mountain, Trail, Enduro, Downhill, Freeride, and Cross-Country riding. Please Note: 1.Universal fit for 21.2-22.3mm bike handlebars. 2.The product package does not contain bike bar end plug 3.Please check the bolts regularly and ensure they are tight before riding.