It´s a shelf book holder shaped as a hand holding tightly against the books. It comes on a single printable piece for larger printers, also available on 3 separated pieces, that needs to be mounted, for easy printing on every smal 3D printers.DIM: 251x161x254 (full piece)DIM: 250x73x57 - P1DIM: 114x83x68 - P2DIM: 148x88x130 - P3