10pcs Block Magnets 20x10x5mm Hole 4mm Rare Earth Neodymium N5 Magnetic Toys

10pcs Block Magnets 20x10x5mm Hole 4mm Rare Earth Neodymium N5 Description: Shape: Block Material: Nd, Fe, B Grade: N50 Plating: Ni-Cu-Ni(Nickel) Color: Silver Quantity: 10pcs Size:20*10*5mm(Length*Wide*Hight)Hole 4mm Max Temp (degrees C):80 Strong magnets should Keep away from Ironware and some easily magnetized iron products, such as monitors, bank cards, computers, televisions, mobile phones and other Strong magnets should be stored in a dry, heated environment, and need to use of plastic, wood, cardboard, foam to separated and wrapped. Magnets might affect water meter ,electric meter, gas meter and some metering equipment exist some inaccurate affect (Such as : if magnets placed near the meter, the meter will slow down) Note: Be careful fragile and clip hand, placed in a dry place, stored at room temperature. WARNING: We would not recommend this magnet be used by children under 8 without supervision. Package Included: 10 Block Magnets