Ultra-thin design with 1/8 (3.2 mm) thickness. Neodymium magnet for strong magnetic force. Hermetically sealed, ideal for high corrosion environments. No metal-to-metal contact, ideal for cleanroom applications. Easy to clean and entirely waterproof, ideal for food equipment. Optional counterplate sold separately: Stainless Steel MC-JM49, AS-68 Plastic Sealed MC-JMP45WT, MC-JMP45BL