Practical : : Including 2 bike wall hooks, 1 bike bell, 1 mountain bike bottle cage (suitable for bikes with bottle cage holes) and 2 kinds of bike chain cleaning brushes. , don't hesitate to contact us. We will have a professional after-sales team to respond to you within 24 hours. Bike hook: :The maximum suspension weight of this bike frame is about 30 kg. It's strong enough for racing mountain bikes, folding bikes, kids bikes, etc. (Not suitable for bikes with thick tires and e-bikes with tire width greater than 6.4cm. Scratch resistant rubber hooks are included. The metal hook cover is wrapped in thick rubber to prevent scratching the edges of the bike. Bike bottle cage: :The new and improved plastic bike bottle cage is sturdy and durable. The holder is suitable for almost all bicycle water bottles, and the thin PC material bayonet will not scratch the water bottle. Please note that the bike frame must have matching threaded holes to attach the bottle holder. Bike cleaning brush: : Prolonged use but not clean, it will damage the power transmission system, premature wear, which will affect the running of your bike. This product is suitable for all types of bicycle chains: suitable for road bikes, mountain bikes, folding bikes, full speed bikes and many 3-speed brake and roller coaster bike chains. Use it to quickly clean the chain. Bike bell: : The classic bicycle horn can still put out a clear and crisp sound, which can be heard clearly even in traffic, making your riding safer. Lightweight and durable, easy to install. .