The file 'Convert Velbon QHD-41 To GoPro Tripod Ball Head 3D Printer Model' is (stl) file type, size is 201.9KB.
Inspired by http://www.thingiverse.com/thing:1215978 I made Velbon QHD-41 to GoPro tripod ball head convertion. Ball diameter is 22mm.
cap_bila_gopro.stl | 1.6MB |