The 9/16" x 14" version of this tool was perfect for our Dexter 3500 trailer hubs. Additional surface area at the edge of the track due to the unique ovals shape of the head. The 14" length was just right for hammering. Removing rings from a hub has never been easier. I also like that this steel tool doesn't flake metal shavings like a traditional brass punch. Getting metal shavings into the bearing would be a disaster.