i5 Small Lockable Storage Box for Motorcycles Lockable license-plate-mounted storage compartment Mounts discreetly behind your license plate (license plate mounts onto the storage compartment). Fits all U.S. motorcycle license plates (except MD, OH, WI). An ideal place to carry your wallet, registration, keys, tire pressure gauge and other small items. Measures approximately 7 inches x 4 inches x 1 inch.