Hercules - Heavy Duty Steel Base Frame and Lid Hercules - Center Mount Option (For Astral-TC, Orion, Sirius and Polaris styles) Hercules - Offset Mount Option (For Orion, Sirius and Polaris styles) Hercules - Twin Mount (For Orion, Sirius and Polaris Styles) ***Additional Mount Clamps needed***
Hercules - Heavy Duty Steel Base Frame and Lid