45mm to 30.5mm adapter

This is a basic 45mm to 30.5mm adapter for any application you can think of. However, I'm using is for an F450 drone build. The holes are designed for m3 sized screws. There's a recess so the 30.5mm mounting screws sit flush with adapter. 

I print them in petg using .20mm Standard Generic PETG settings in studio. I hope you find it useful!