Features - The pulling force will maximize when one pulls vertical direction with surface magnets. - The Traction Force will be influenced by many factors: the material's material, effective contact area, the softness of the surface, to the direction of traction, temperatures, material type, thickness, flatness, friction levels , etc.), its quality (eg rust delivery), its size (thickness plus total area), etc. - The big magnet is extremely strong, and must be handled with care to avoid injuries and damage to the magnets. Fingers and other body parts can get severely pinched between two attract magnets. - Never worry about the orientation of your magnet when dragging underwater. Two magnets ensure its never facing the wrong way. - Strong magnetic attraction and easy to carry. Specifications MAX Pull Force: 400KG/300KG/250KG/160KG Diameter: 75mm/67mm/60mm/48mm Length of rope: 10m Package Includes: 1 x Magnet 2 x Ring 1 x Rope