Looking for Caster wheels? Get this 3D model from jwzg1992 via CGTrader for $5.
OBJ (OBJ, filesize: 1.34 MB), SKP (Sketchup, filesize: 6.27 MB), JPG (JPG, filesize: 4.59 MB), MAX (Autodesk 3ds Max, filesize: 2.91 MB), FBX (Autodesk FBX, filesize: 1.74 MB)