The Monster Magnetic Trays are designed to keep loose nuts, screws, bolts and drill bits stationary. These trays feature 1,000 to 1,200 gauss magnets that stick to any metal surface, and protective vinyl feet prevent the tray from scratching paint. Each tray is made of tough stainless steel that is easy to clean. These trays can attack vertically on a hood or fender. The trays are available in round (Nos. MST1702133 and MST170227), rectangular (No. MST170223) and square (No. MST1702271) options.