If you own a motorcycle, ATV, or dirtbike this assortment is something you should have. It contains over 200 pieces of M5, M6, M8 and M10x1.25 hardware including hex cap screws, socket cap screws, machine screws, hex nuts, lock nuts, flat and lock washers, cotter pins and a 5mm hex key (allen wrench). All of the hardware is zinc plated and the hex heads, allen heads and nuts are hardened alloy steel. It comes in a durable sectional plastic box that measures 8 1/2 x 5 x 1 1/2" . At a minimum this kit will cut down on trips to the hardware store and it could even save your day on a long ride!