Woodwork Hole Saw Wall mount

This is probably not useful for most of you guys.

It's very specific for the variable diameter hole saw: https://www.ebay.com/itm/Adjustable-Circle-Hole-Cutter-Wood-Drywall-Bit-Drill-Saw-Carpentry-Hole-Saw-NEW-/222475549016 (Disclaimer: I do not receive royalty from this shop, nor am I making recommendation, it's the product of same dimension I bought)

I printed with support only in the 2 mounting holes (You might not need the support, it's a 4.6mm for 4mm pointy head screw hole)

PS: Th