Feature:
• Genuine Shimano HollowTech II bottom bracket assembly
• Set includes left and right hand cups, spacers, inner cover, and inner O-rings
• Sealed cups keep out dirt and water
• Maintenance free
• Compatible with 68 mm and 73 mm shell
***These are OEM Shimano Parts, Brand new, Never Installed on Bike, Never used in any way, just NOT in retail packaging.***