Protect your license plate from thieves and rattles with this complete security screw kit. The screws are made from 304 stainless steel, so they're rustproof, weather-resistant, and super durable. The special tamper-proof design means the screw head has a unique hexagonal button with a pin in the center—regular Allen wrenches or screwdrivers won't work on it. You HAVE to use the specialized driver bit included in the kit to install or remove them. That keeps your plate secure. The kit has everything you need: screws, bolts, nuts, washers, matte black caps to cover the screw heads for a clean look, and the security driver. The size is M6 x 20mm (about 1/4 inch), which fits most cars, trucks, motorcycles, and trailers. The washers help prevent vibration noise and protect your car's paint from scratches. A simple, affordable upgrade for peace of mind and a sleek, blacked-out look.