Magnetic Hooks, 1" diameter, 2 Per Pack, 2 PacksSuper strong! Use to hold or hang heavy objects throughout your classroom. Made with super strong neodymium magnets. Hooks can swivel up and down. Holds approximately 20 lbs. from a vertical position and approximately 10 lbs. from a horizontal position on heavy steel. Holds approximately 1 lb. on a whiteboard and approximately 8 lbs. on a metal door. 1" diameter, 2. 5" long hook. Includes 2 hooks per package. Sold as a set of 2 packs, 4 hooks total.