Multi comes with one but not the Hyper.
For what it is worth, the Multi one is made of cheese.
Plenty of sellers of reasonably priced alternatives though.
I'm thinking about making one for this bike that also does the oil filter and some other special bits. Any interest?
I guess you just have used ali for the prototype, is not susceptible to bending if the oil filteris tight?
Perhaps leave the meat in it and don't cut the triangular hole in body of the tool?