Tripeak Ceramic Bearing #6806 (30x42x7mm) Speed-12 Speed and 120mm – for more

and 120mm – for more comfort and better handling whatever your size and style of riding

Internal o-rings and a grease sleeve help maintain grease levels

Selfit SELFIT is an automatic self-adjusting fitting system which is a revolutionary technology in bicycle helmet fitting

Suitable for both Schrader (Auto) and Presta (French) valves

Tripeak Ceramic Bearing #6806 (30x42x7mm) Speed-12 Speed and 120mm – for moreSuper high performance Ceramic Bearing with our legendary Ceramic Nitride Pro Series lightweight balls, nylon cage, dual removable and fully serviceable rubber seals, and the optimal amount of 100% synthetic American ACERGoo lubrication. Features Roll Smoothly Internal G5 steel ball and synthetic grease, minimize friction and improve rotation efficiency. Without Backlash Under the condition of non load, the radial swing play is within the 9um range.