This is a single Phil Wood 6001 Cartridge Bearing. Compatible with 2nd Generation Front Track & Road Hubs, Surly Track Hubs.
- Phil Wood and Company is credited for pioneering the first production sealed bearing cycling components
- 100% filled with Phil Waterproof Grease for maximum durability
- Bearings with an "X" have the same seals as those specified for submersible motor/pump bearings
|ID X OD X W Mm:||12x28x8|