HOLLOWTECH 2 OUTBOARD CUP ADAPTER TOOL. SHIMANO TL-FC25. I have several Shimano tools listed.
SHIMANO HOLLOWTECH 2 TL-FC16 CRANK ARM TOOL PRELOAD TENSION INSTALL REMOVAL
CRANK ARM INSTALL REMOVAL TOOL PRELOAD TENSION SHIMANO HOLLOWTECH 2 II TL-FC16
CRANK ARM TOOL PRELOAD TENSION INSTALL REMOVAL SHIMANO HOLLOWTECH 2 II TL-FC16
Crank Arm Install Removal Tool for Shimano Hollowtech II TL-FC16 Preload Cap -UK
Pre load crank arm bolt cap M20 Shimano Hollowtech 2 Crank M20