Meco 18pcs N52 D12x5mm Strong Round Magnets 4mm Hole Countersunk Rare Earth Neodymium Magnets

Description: 18pcs N52 Strong Round Magnets D12x5mm Rare Earth Neodymium Magnet with 4mm Hole This neodymium (NdFeB) strong round magnet will fit Dia. 10mm threaded ball, you'll need 12 of them for each detla magnetic joint 3d printer. Specification: Shape: Round Material: NdFeB magnetic materials Diameter: 12mm Thickness: 5mm Hole: 4mm Grade: N52 Quantity: 18pcs Attention: These magnets are very powerful which should be handled with great care.Do not allow children to play with them unsupervised as they could get injured.Especially pay attention to the samll magnets please place in somewhere children can't reach. Care should be used when handling two magnets as they can pull together with such force that pieces of the magnets can splinter off and cause injury. Keep the magnets away from pacemakers and magnetic storage devices such as mobile phones, bank cards and computers. Package Included: 18x N52 Magent