Review on 🔧 SALEX Metal Plates for Magnetic Mount - 32 Pack of Small 0.4" x 0.8" Silver Iron Discs | No Holes - Perfect for Wall, Air Vent Phone Holder, Case, Magnet, Craft | Steel Replacement Set with 3M Adhesive Backing by Joe Drew

Unusable because poorly made. When punching/cutting a part, they punch from the side of the adhesive pad. On the other side (the side of the main contact) the entire edge sticks out! The magnet does not touch the surface, only the sharp edge. Only works if your magnet is 9mm or smaller, not 10mm or larger. The elongated shape 20 x 10 mm and thickness 0.5 mm are correctly described by the seller. The sharp edge that sticks out will also cut you. Have a patch ready.