One of the essentials for your backpack is a good multitool, check out Eclat's offering...

The E-Tool is the Swiss-Army knife for your BMX. All the functions of the tool are hidden inside the anodised tube. Throw it in your bag and make sure you don’t lend it to anyone, as you’ll never get it back!

Material
crmo

Size
188 x 30mm diameter

Color
Black

Features
8/10mm wrench / 15mm spoke wrench / 1/19mm U brake wrench / 3, 4, 5, 6, 8mm hex bit / 17mm socket