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″. Weight 30.3oz