Amazon.ca Product Description "Magma’s 28” locking pedestal mount for Marine Kettle grills has a double locking mechanism that insures a secure fit for your boat or home application. This double locking, Silver metallic anodized Aluminum, pedestal post locks into the surface mounting base and grill mounting bracket with (2) single push-buttons; allowing the entire assembly to be instantly installed or removed and stored for convenience. The low-profile threaded twist-lock surface mounting base has been designed with a flush bottom so there is no need to cut a hole in your deck and measures just 5/8"" tall and 7” diameter with a 5-3/4"" bolt pattern. With its versatility and convenience this is the perfect mounting option for boat swim platforms, boat decks, pontoon boats, or at home on the patio, balcony or deck. Grill sold separately. Fuel canister not included. Some additional fasteners required for complete installation. Charcoal Marine Kettle grill installation requires adaptor, 12-649, which is not supplied with this mounting assembly. From the Manufacturer "Magma’s 28” locking pedestal mount for Marine Kettle grills has a double locking mechanism that insures a secure fit for your boat or home application. This double locking, Silver metallic anodized Aluminum, pedestal post locks into the surface mounting base and grill mounting bracket with (2) single push-buttons; allowing the entire assembly to be instantly installed or removed and stored for convenience. The low-profile threaded twist-lock surface mounting base has been designed with a flush bottom so there is no need to cut a hole in your deck and measures just 5/8"" tall and 7” diameter with a 5-3/4"" bolt pattern. With its versatility and convenience this is the perfect mounting option for boat swim platforms, boat decks, pontoon boats, or at home on the patio, balcony or deck. Grill sold separately. Fuel canister not included. Some additional fasteners required for complete installation. Charcoal Marine Kettle grill installation requires adaptor, 12-649, which is not supplied with this mounting assembly.