Jones H-Set Caged Bearing for Truss Fork.
The Jones headset uses traditional cup and cone bearings (in retainers, although it can run without them).
Totally rebuildable, infinitely adjustable, replaceable bearings, excellent tolerances and less tolerance stack-up.
Large ball bearings.
Seals (top and bottom).
Compression ring design is easy to install and slide on the steerer tube.
Quality materials throughout.
1-1/8" for a Truss fork.
109 grams (Weight does not include the compression parts; star nut, bolt and top cap).