Premium : With strong magnets, adheres to any ferrous metal , simply place it against any metal machine in your workshop. Multipurpose:Can be attached in all positions, horizontally, sideways and upside down Application: for Ideal for storing small metal parts and tools, such as, nails, screws, , bolts, and more. Constructed from high grade alloy, not easy to break, resistant to rust, long lasting. If you have any questions, please to us.