Fulcrum Freehub R5-014 Camp 9mm  (for 12mm axle) new-262827 The outer layer is a

The outer layer is a fabric you've seen on some high-end down jackets from some big brands

and pockets for perfect fit

Angular-Contact Bearing Bottom Bracket for BB386 type (30mm) spindles

Enduro offers a solution for just about any configuration at multiple price/performance levels

A radial bearing used as a hub bearing for some lightweight hub designs

Fulcrum Freehub R5-014 Camp 9mm  (for 12mm axle) new-262827 The outer layer is aTo identify the Fulcrum part code that you require, please see the fulcrum parts catalogues avaiaible here: Fulcrum Spare Parts Catalogues And if you're not sure what model year the wheel is, you can use the Fulcrum catalogues here: Fulcrum Wheel Catalogues