This product is a 0.4mm neodymium magnet, 0.4mm is the thickness, the diameter is 10mm, and it is magnetized in the thickness direction. It is an ultra-thin and powerful magnet. about 0.15kg pull, If you need a smaller diameter, such as 3mm 4mm 5mm, you can contact us to quote for you, provide samples, performance The grades can choose N35-N52....