Givi MM Monolock / M3 Monokey Top Case Mounting Plate for F Series Top Case Racks Givi MM and M3 plates are designed to be used in conjunction with F-series Monorack Sidearms to complete a bike-specific mounting solution for a Givi top case. The top plate type needs to match the style of your top case. Monolock top cases are economical options with lighter load and smaller volume capacities. Monokey cases are more robust and feature greater storage capacity and more premium options. MM Monolock Top Plate: Thermoplastic construction Compatible with all Monolock top cases M3 Monokey Top Plate: Thermoplastic construction Compatible with all Monokey top cases Note: Givi Monokey / Monolock Top Case Racks are sold separately.