Length: 20mm、 width: 10mm、 height: 2mm; Rectangle magnets、 suction is strong、 can be used in industrial production、 the gadget adsorption、 etc.、 can also be used for personal creative design. Dimensions: 0.79 in x 0.39 in x 0.08 in (2.0 cm x 1.0 cm x 0.2 cm) Weight: 4.80 oz (136 g)