Thingiverse
MakerWorld
MyMiniFactory
Printables
Thangs
Cults
CGTrader
Youmagine
Gambody
Etsy
Tags
Sizing 3D Printable Models
Hole size gauge 3mm to 13.9mm with raised numbers
MakerWorld
GFPIYA
Circular Ring 2 Sizes
MakerWorld
Dennis
UK shellfish Gauge
Thingiverse
AdventuresOfBilbo
Hole size gauge 3mm to 13.9mm (2 color version)
MakerWorld
GFPIYA
Oura Ring 4 Sizing Kit
Thangs
cade.kmichael
XT60 Fit Adjuster / Pin Sizer
Printables
Maxim7745
Drinko Plinko - Laser cut edition renewed
Thingiverse
RikvdReijen