Magnet Ball Size: D5mm,216pcs/set Coating: Ni coating Grade: N35 NdFeB Magnet Tolerance:+/-0.02mm ... .Using your imagination to create different shapes by yourself.Descriptions:Quantity/set:216 pcs/set,125pcs/set or customizedGrades: N35, N38, N40,N42,N45 ... of the payment.Shipment terms: There are three shipping methods-- by air, by sea, by express, including DHL, UPS, FedEx, TNT and so on ...