The file 'M8 Hammer – Small Plastic Hammer 3D Printer Model' is (stl) file type, size is 32.6KB.
Small hammer with hole for inserting an M8x40 bolt as weight for some oomph.
There are voids inside the hole for capturing hot melt glue if you really want the bolt stuck in there. But just press-fitting the bolt is probably good enough.
M8_Hammer.stl | 117.5KB |