set2: 1 x Extension Bar + 2 x Bracket + 1 x Hex Key Wrench & 1 x TireHigh-quality Material--Handlebar extender is made of high quality ultra-light aluminum alloy lightweight and durable,surface with anode processing not easy to rust or fade,strong corrosion resistance.Multifunctional Extender--Breaking the shackles of space add extra space,can assemble more items such as lamp frame, mobile phone rack,code table,horn,etc.,release handlebar space,avoid all due to the handlebar things too much caused by riding hidden dangers.Steady and Secure--With thick rubber straps gaskets on the inside of the ring that mounts to your bars for strong and secure hold,Prevent the extension of the handlebar from sliding.1.High quality:Sturdy and good elastic rubber tires ensure good grip on different terrains.2.Special design:new honeycomb design,thick tire design ensures flexibility and cushioning capacity,so the tire can withstand any pressure changes.3.Convenience:Easy to install and disassemble,it is an excellent substitute for used tires.4.Features:Front and rear tires,prevent puncture,sturdy and durable.5.Application:Designed for the Xiaomi Ninebot ES1 ES2 ES3 ES4 electric skateboard.Easy to install--With an Hex key wrench,you can have the extension bracket installed within a minute.Compatibility--Suitable for different handlebar sizes,can be installed on Normal Size(25.4mm) and up to over size(31.8mm)handlebar;25.4mm handlebar need to add gasket.Suitable for XIAOMI M365 electric scooter,Ninebot ES1 ES2 electric scooter and Mountain Bicycle.Outer size:18.5 x 18.5 x 5.5cmInner size:14.2cmApplicable:For Xiaomi 9 ES1,ES2,ES3,ES4 scooter modelsColour:Black/redMaterial:rubber/aluminum alloyPackage Contents:1 x Extension Bar2 x Bracket1 x Hex Key Wrench1 x TireOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.