EAONE 40 Pack Magnetic Whiteboard Eraser Dry Cleaner for School OfficeFeatures: 1.The magnetic whiteboard dry erasers can be applied in classrooms as daily necessary 2.Erasers with soft magnetic can stick to metal surfaces like metal whiteboard, chalkboard and so onSpecifications: Size: 5 x 5 cm/ 1.97 x 1.97 inch Thickness: 0.79 inch/ 2 cm Material: foam and felt Individual Weight: 6g Color: blue Quantity: 40 piecesPackage Includes: 40 Pieces Blue Magnetic Whiteboard Dry ErasersSweet Note: 1.It may exist some extra felt on the surface when you receive, please blow them with blower or fan. 2.The erasers are hand-washable, but not allow to wash by machine