Maximum load: 5.5 - 7.5 lbs (2.5 - 3.5 kg) (when using 2 units) 10.7 - 16.5 lbs (4.5 - 7.5 kg) (when using 2 pieces of steel and steel); For holding tools. For joining steel. Magnet on both sides of the front and back. (With double-sided adhesive tape) Maximum load is 5.5 - 7.5 lbs (2.5 - 3.5 kg) (when using 2 pieces of non-magnetic material and steel), 10.2 - 16.5 lbs (4.5 - 7.5 kg) (when using 2 stickers). Can be cut with a cutter. Stick it to the back of the panel, board, or box to attach it to the steel surface.