Nice solution. With either the gear puller or the 3-way clamp, you can compress the spear's o-ring and it makes ring install/removal easier. I'll have to pick up one of those up soon.
Thanks for sharing!
I am thinking along the same lines as you. Just kegged for the first time yesterday and am using. 5 gal sankey. Getting that ring in is frustrating. There has to be something better than the pliers method.
Is the tool in your picture an installer or an extractor?
The smalley website shows...