The magnetic Block Letters are another popular type of block magnet. They are a combination of iron oxide and barium. These blocks are useful for model making. The two block magnets of N50 are used to create a Maglev train. […]
The magnetic Block Letters are another popular type of block magnet. They are a combination of iron oxide and barium. These blocks are useful for model making. The two block magnets of N50 are used to create a Maglev train. […]