Super strong magnets hold patch panels in place from the outside, perfect for blind repairs. 8 pack of strong rare earth magnets. 1/2 inch (12.7mm) diameter disc. Strong enough to hold patch panels. Hold flush patches in perfect alignment. Position panels with no gaps. Perfect for blind repairs. If you have ever tried to weld a patch panel into a spot where you can’t access the back side, these rare earth magnets are a life saver. These nickel plated super strong magnets come 8 to a package, and each one measures just 1/2 inch (12.7mm) in diameter, but are strong enough to support several pounds. Place them every few inches at the edge of your panels and you can position the panel with no gap, or the perfect gap for whichever welding method you are using. Use a few of these magnets and never feel like you need 3 hands again.