$36 POWER ASSIST MOTOR HAND TRUCK DOLLY STAIR CLIMBER TROLLEY CART 2 3D model by SURF3D. Available on CGTrader with 666911 polys and 533958 vertices. Check it out on CGHub.
STL (Stereolithography, filesize: 63.1 MB), OBJ (OBJ, filesize: 125 MB), GLTF (glTF, filesize: 41.9 MB), BLEND (Blender, filesize: 114 MB), 3DS (3D Studio, filesize: 27.8 MB), 3DM (Rhinoceros 3D, filesize: 129 MB), DAE (Collada, filesize: 216 MB), SAT (3D ACIS, filesize: 101 MB), IGE (IGES, filesize: 91 MB), FBX (Autodesk FBX, filesize: 39.2 MB), DWG (AutoCAD, filesize: 34.3 MB), STP (STEP, filesize: 53.9 MB), MAX (Autodesk 3ds Max, filesize: 287 MB), SKP (Sketchup, filesize: 63.6 MB)