PowerBlock Situp Adapter

I like to hook my feet under my adjustable dumbbells to do sit-ups, but it's pretty uncomfortable to put the tops of my feet up against the metal bars.

So I designed and printed a bracket that snaps onto the PowerBlock EXP, converting the dumbbell into a comfortable sit-up weight.

After printing, I added two layers of 3/4" foam tape to each adapter: https://www.mcmaster.com/catalog/93275K122