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