This is a pack of 4 ceramic grade 5 magnets. Each magnet measures 1.875" by 0.875" by 0.375" thick. [Approximately 47mm x 22mm x 9mm thick.] The poles are on the large opposite faces, ideal for constructing an alternator. These magnets have an intrinsic strength of 0.395 Tesla (3,950 Gauss) and are among the most cost-effective strong magnets available.

These are the same magnets used in the following PicoTurbine products:
• Savonius Model Wind Turbine
• Savonius Model Wind Turbine Plus
• 3-Phase Wind Turbine Kit

WARNING! These magnets are strong and can pinch your fingers if not handled carefully. Persons wearing pacemakers should not handle strong magnets.

Product Highlights:
• Bundles of 4 ceramic grade-5 magnets
• US Dimensions: 1.875" by 0.875" by 0.375" thick
• Metric Dimensions: 7mm x 22mm by 9mm thick
• Intrinsic strength of 0.395 Tesla (3,950 Gauss)