Product Name: Strong N48 F12.7X3.175X3.175mm Block Neodymium Magnet Model NO.: N48 Grade: N48 Coating: Nickel Shape: Block Application: Speaker Magnet, Industrial Magnet, Jewelry Magnet, Solenoid, Motor Magnet, Vcn Product Name: Strong N48 F12.7X3.175X3.175mm Block Neodymium Mag Envrionment Management System: ISO14001 Certificate: CE/RoHS/SGS Quality System-1: ISO/Ts16949:2009 Model Number: Gem-ND001-53 Magnetization Direction: Axial/Radial/Multi-Poles Magnetization Magnetic Properties: 80-200 Degree Centigrade Transportation: All Available Shipping Ways Could Be Applied Tolerance: +/- 0.05mm Lead Time: 18-23days Trademark: GME Transport Package: as Client's Request Specification: F12.7x3.175x3.175mm Origin: Zhejiang Ningbo/ Fujian Xiamen HS Code: 850511100 Product Description We can replly Excellent Against Humidity, Salt Spray. Superior Against Solvents, Gases, Fungi and Bacteria.