Will not fall off because of dirt or grease Temporary or permanent installations ULC Listed Rare earth magnets for cable mounting The Winnie Industries Magnetic Cable Tie Mount features a permanent rare earth magnet. Great for securing a multitude of wires and cable with a tie. 26 Lb permanent rare earth magnet Sticks through oil, grease, dust/dirt Plastic has a .875″ Opening for securing 3/4″ Grip Tape Velcro Brand Hook and Loop Tapes Larger sized Cable Ties Various Straps and Retaining Ties UL listed UV Rated Black Plastic