Triton Products KTI-72450 MagClip Magnetic Steel Double Prong Tool Holder 4-Inch L by 2-Inch W by 3-Inch H, Black Holds heavy tools up to 11-pound. including (hammer, mallet, wrench, etc.) as well as irregular shaped tools Holding capacity can be influenced by the thickness and finish of attaching surface. Magnet will not lose holding power over time Screw-hole design also allows for easy mounting to non-ferrous surfaces