CERAMIC RINGS
3/4" dia. x 1/8" thick
6 pieces
For hobby, crafts, school
Clamshell
6-pc. ceramic ring magnet set. Each measures 3/4in. O.D. x 1/4in. I.D. x 1/8in. thick. Also know as ferrite magnets, these ceramic magnets are made from the highest grade of ceramic available, giving them unbeatable pull strength. They are also highly resistant to demagnetization and have excellent corrosion resistance. Attach the ring magnet to a drawer or cabinet by putting a screw through the hole in the middle of the magnet.This ring magnet is made of strontium ferrite. It is a classic low-cost magnet for demonstration and experimentation. Just put several of these ring magnets on a regular pencil and have bunch of them levitating. Get a few of these for your next science fair project. These may come in assorted colors or just plain dark gray.Warning: choking hazard Small part. Not for childred under 3 years of age.

Neodymium Iron Boron (NdFeB) Rare Earth Magnets
Grade - N40
Dimensional Tolerance - +/-0.005 Inch
Package of 4 Magnets
1.000" Diameter x 0.500" Inside Diameter x 0.125" Thick (Inches)
Rare earth magnets are the strongest type of permanent magnet currently made. They are amazingly powerful for their size and have innumerable uses. These ring magnets are 1.000 inch (25.4mm) diameter, 0.500 inch (12.7mm) inside diameter and 0.125 inch (3.2mm) thick. They are magnetized through the thickness. They are composed of grade 40 neodymium iron boron magnetic material and are plated in nickel-copper-nickel for a shiny corrosion resistant finish. Their individual pull force is approximately 5.4 lbs. Maximum working temperature is 176 F (80 C).