Easy installation: includes mounting bracket, shoulder strap and hexagon wrench, which is easy to install on bicycle fork or scooter tube. stability:The bicycle bag can be firmly fixed on the bicycle after installation, and it will not loosen or fall off even on the bumpy road There may be larger bottles or other water containers, possibly a small sleeping bag or a whole host of other very essential things. The baskets allow you to safely carry large bottles of water or anything you improvise on the way and are very versatile. Made from material that can hold a bag, it can also be used separately to carry other items such as water bottles, bags or camping mats. Items can be attached to the cage by means of two built-in straps. These straps have a very durable buckle for easy one-handed operation. The basket can be screwed onto a fork (if appropriate) or a bottle holder on a bicycle frame. Specifications: A: Mountain bike bag holder Colour:Black Material:plastic Package Contents: 1 x Mounting Base 1 x Wrench 3 x Screws 3 x Cable Ties 2 x Nylon Sticker 3 x Anti-slip Pads Only the above package content, other products are not included. Note: Light reflection 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.