FSA Megaevo BB Cup Spanner Tool You need the right tool to work with your FSA Megaevo bottom bracket. The FSA Megaevo BB Cup Spanner Tool is the right tool. This 'spanner' is designed specifically by FSA to work with their bottom brackets. FSA Megaevo BB Cup Spanner Tool Specifications: Installs and removes threaded cups for 386Evo cranks Mfr Part #: 230-2101 | Fsa | Megaevo Bb Cup Spanner Tool Fsa | Megaevo Bb Spanner