MAGNETS COATED - Ni+Cu+Ni Triple Layer Coated. The Best Coating Available, which Provides a Shiny and Rust Resistant Protection for the Magnets. POWERFUL MAGNETS - Made of Strongest Magnetic Material! Strong Holding Power, Holding Power is not Less than 33 lb per Magnet with Direct Touch and Direct Pull. MAGNETS DIMENSIONS - 60mm x 10mm x 5mm (approx. 2.36" x 0.4" x 0.2"). Tolerances: ±0.2mm x ±0.2mm. DIY PROJECTS & SCIENCE EXPERIMENTS - Refrigerator Magnets, Shower Door, Work or Office, Scientific Purposes, Arts and Crafts or School Classroom WARNING - The bar magnet is very fragile, it is forbidden to collide with other metal objects (including another magnet), so be careful when you are trying separte them ! LOVIMAG Neodymium Bar Magnets - 60mm x 10mm x 5mm (20 PCS) /b br / Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. br / These block magnets are 2.36 inch (60mm) long, 0.40 inch (10mm) wide and 0.2 inch (5mm) thick. They are magnetized through the thickness. br / They are composed of neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Maximum working temperature is 176 F (80 C). br / br / These Neodymium thin rectangular magnets provide an astonishing pull of 33lb and every magnet has a triple coating of nickel, copper and nickel again to prevent against corrosion. br / Our Neodymium magnets are commonly used in creative applications such as model making, theatre design, furniture making, exhibition displays and packaging. br / They also have many uses in engineering and manufacturing where small size and maximum strength are required. br / What's more, because of their resistance to demagnetisation they are ideal for creating a shock-absorbing or damping effect when used to repel other magnets. br / br / br / Warning /b br / 1. Keep away from pacemakers. br / 2. Powerful magnets can hurt your fingers. br / 3. Not for children, parental supervision required. br / 4. All magnets may chip and shatter, but if used correctly can last a lifetime. br / 5. If damaged please dispose of completely. Shards are still magnetized and if swallowed can inflict serious damage. br /