Pinshape
It's made to fit snug, though i did have to grind the seam off on the inside as it would get stuck on it. If you don't mind the tolerances being a bit bigger, just increase the size of one of the parts.
Direct link to the original creator's page
This model is published by its creator on Pinshape. STLFinder only indexes it: the "View on Pinshape" button above opens the original page, where the creator shares the STL files under their own license.
This model is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, the creator shares it at no cost on Pinshape. Some creators accept tips or donations.
Check the license (CC BY) on the original Pinshape page. Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer.