These magents are 2" long x 1" wide x 1/2" thick (50.8mm x 25.4mm x 12.7mm) Material:Ferrite Grade:C-11 Magnetization:Through the thickness Pull Force: 10.0 pounds SKU# MCER2x1x12BL10PK Keep away from children, pacemakers and other implants. Handle with care. Our magnets are made for the adult inventor, manufacturer, researcher, DIYer, problem solver, etc.