Machine parts being heads, namely, cutting heads, heads for ink jet printing machines, spray heads, multiple axis heads for use in drilling, and mosaic heads for impact printing machines, book-sewing machines; couplings for machines, namely, couplings for electric tool heads; machines, namely, machines for producing paper and cardboard, machines for the treatment of paper and cardboard, laser engraving machines, laser cutting machines, machines for manufacturing paper and cardboard boxes, mac...