- 4.7~4.9mm diameter sized spheres<br />- Ultra strong rare-earth magnets<br />- Perfect pieces for DIY projects and for building 3D puzzles out of magnets&nbsp;&nbsp;&nbsp;&nbsp;<br />                                                                                                                                Dimensions: 0.2 in x 0.2 in x 0.2 in<br />Weight: 4.83 oz