The Kotulak is a multi-tool that has everything needed to assemble and work on most modern BMX bikes, all packaged in a durable all steel body and cap. The tool has a 17mm socket, 15mm pedal wrench, spoke wrench, chain breaker, and interchangeable hex bits of the most common sizes — 5mm, 6mm, 8mm, 7/32" and 1/4". 

Basically a Bmxers Dream tool and a Must when traveling with your bike