Royce Titanium Bottom Bracket, With End Bolts and Lock RingsAll Royce bottom bracket axles are machined from 6AI-4V Titanium. The standard spacer and cups are manufactured from aerospace grade aluminium and are clear anodised to prevent corrosion. Royce Bottom Bracket Axles are machined from a very tough material called 6AI-4V Titanium and the tolerances held are very tight. During manufacturing our Spacer and Cups are manufactured from aerospace grade Aluminium, diamond turned and clear anodised to prevent corrosion. Our precision bearings are supplied with all weather labyrinth seals for improved reliability.Bearings can be supplied with low friction track use seals or all weather seals.109X68 ISOBB can be serviced by RoycePrice includes - axle, bearings, spacer, cups, Lock Rings and End NutsWeight - 190g