Applied Magnets Neodymium Magnet 2-Inch OD x 1-Inch ID x 1/4–Inch Ring Description Features: 1 Piece - Made with the Strongest Magnet - Neodymium Magnet. Offers much more holding power than any ceramic magnet. Magnet Grade N42 , stronger than N40, N38 and N35. Magnetized axially through the Thickness 0.25", poles on the flat surfaces. Approximate Pull Force: 50 lbs. Durable Nickel-Cpper-Nickel 3-layer Coated magnet. Product Details: Material: Neodymium Brand: Applied Magnets Color: Silver Shape: Round Item Thickness: 0.25 Inches Material: ‎Neodymium Brand: ‎Applied Magnets Color: ‎Silver Shape: ‎Round Item Thickness: ‎0.25 Inches Number of Pieces: ‎1 Pull Force: ‎50 Pounds Manufacturer: ‎Applied Magnets Part Number: ‎NR019 Item Weight: ‎4.8 ounces Item model number: ‎NR019 Is Discontinued By Manufacturer: ‎No Size: ‎2" OD x 1" ID x 1/4" Item Package Quantity: ‎1 Cutting Diameter: ‎2 Inches Batteries Included?: ‎No Batteries Required?: ‎No Assembled Diameter: ‎2 Inches Date First Available: January 16, 2014