The levels below contain contain earth magnets. Click on the link to view the product descriptions. 43-649 - 48" FatMax Xtreme Magnetic Box Beam Level 43-625 - 24" FatMax Xtreme™ Magnetic Box Beam Level 43-609 - FatMax Xtreme Magnetic Torpedo Level 43-124 - 24" Magnetic ProLevel I-Beam Level 43-148 - 48" Magnetic ProLevel™ I-Beam Level 43-178 - 78" Magnetic ProLevel I-Beam Level