Remix of Jerrari's excellent design. I found it worked better being 10mm longer, and with the inner step detail removed. This works for most Ryobi One+ cordless tools, but see my other remixes for more unusually-sized tools.
You can see the difference in the second photo, with the original design on the left, my variant on the right. It's a small difference but I found tools sat more stably in my version.
The author remixed this model.
10mm longer and with smooth-sided internal profile, removing the step which made tools tend to sit lopsided.