This versatile seven-piece Alnico magnet kit features popular shapes and sizes-all in one convenient storage box. The magnets’ alloy construction produces high magnetic strength. The kit contains two bar magnets, 15cm long with a 19mm x 6mm cross section; horseshoe magnet/keeper, 2.8cm x 2.9cm x 0.6cm; disk magnet, 4.0cm diameter and 7mm thick; cylindrical magnet, 4.5mm diameter and 50mm long; and 2 block magnets, 25mm x 19mm x 13mm.