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 Includes:1pcs
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