Descriptions:
Install tool for Shimano Hollowtech 2.
Designed to fit externally ringed bottom brackets.
Install tool for Shimano Hollowtech 2 and preload tensioning tool.
If in doubt there are some great videos on YouTube covering the installation of Hollowtech II Bottom Brackets.

Features:
Powder-Coated Steel
Comes with the preload tensioning tool
Will fit externally ringed Bottom Bracket

Package Content:
1 X BB Bottom Bracket Install Spanner Shimano Hollowtech II 2 Wrench Crankset