●【POWERFUL】 Grade 8 ceramic magnet material with 3,850 Gaussian internal. Each piece can provide 29 pounds of holding force under ideal conditions. ●【ECONOMICAL】This ceramic magnet is an economical choice for magnets. Only a small part of the cost of a rare earth magnet of similar size. ●【DURABLE】They will not rust in any environment. Suitable for fresh water or salt water. Magnetism will always continue normal use. ●【APPLICATION SCOPE】Science education in schools, childrens science projects, namely suspended trains, hand-made at home, light work in the backyard or garage, etc. ●【BUY WITH COMPLETE CONFIDENCE】If you are not satisfied with the magnet for any reason, we will provide a 30-day no-guaranteed money-back guarantee.