12 strong neodymium magnets that will hold the heaviest of knives tip up or down! Seriously, we've tested every single knife in the shop and even some pots and pans and there's nothing this guy can't hold. For our tests we used the double sided tape included and the racks felt super solid the entire time.
Included are two mounting options :
Anchors & Hex screws for the cleats
3M Double sided adhesive. Be sure to clean the wall and let completely air dry before applying and let sit for 24 hours before hanging anything on the strip!