CMS Magnetics Domino Size Magnet - 1 7/8 x 7/8 x 3/8" Ceramic Magnets Grade 8 - For Crafts, Science and Hobbies - Hard Ferrite Grade 8-50 Pieces Effective: Grade 8 Ceramic Magnet Material with an Internal Gauss 3,850. Each Piece Provides 4 LB Holding Force with a Direct Touch and Direct Pull on a Steel Surface Economical: The Most Economical Option for Magnets. Just a Fraction of the Cost of Similar Sized of Rare Earth Magnets Applications: Science Educations for School, Kids' Science Projects, i.e. Levitation Train, Home Crafting, Light Holding Jobs in Backyard or Garage, Magnetic Therapy for Pain or Bug Stings. Holding Assemblies and Tools. Gifts Durable: They will not Rust in Any Environment. Suitable for use in Fresh or Salty Water. Magnetism will Last Forever for Normal Use Best Quality and 30 Days Money Back Guarantee: The Best Ceramic Magnets Made under ISO 9001 Quality Systems! We will Refund Every Penny or Replace if There are any Quality Issues