Features and Benefits:Keeps small metal parts and tools from getting lost;Permanent magnet sticks to any ferrous metal surface;Rubber coated magnets prevent scratching;Even works sideways and upside down;High impact ABS construction;Keeps small metal parts and tools from getting lost. Permanent magnet sticks to any ferrous metal surface. Rubber coated magnets prevent scratching. Even works sideways and upside down. High impact ABS construction