WORKPRO magnetic wrench holders come in a set of two and are designed for easy storage and quick access. They can be mounted on a workbench or inside portable toolboxes. Each tray holds 12 wrenches, compatible with both metric and SAE sizes, with designated slots to prevent mixing or slipping. Made of durable ABS plastic, they resist damage, are easy to clean, and unaffected by temperature changes. A strong magnetic plate on the back allows secure attachment to any metal surface.