It's a very tough-built axle. I was impressed with it when I had it apart for the gear change. The ring gear is about 12" if I remember correctly. All the parts (bearings and seals) are readily available from Rock Auto if you use a 1968 C30 as the source vehicle in their catalog. That was the last year the H110 was available in a regular production vehicle. Their catalog isn't very comprehensive for early model trucks, even though they used the same axle.
