CarryaBigSticker Thin & Flexible Magnetic Material Sheet 12 x 24-inch (.020 in. thick) Black for Magnetizing Bumper Stickers etc. Measures 12 x 24.375 x .020 inches (About 1/3 as thick as a penny.) Brownish black on both sides. Magnetic on one side. Clings to steel surfaces but is easily removable. Cuts easily with scissors or a paper trimmer. Please purchase from Lifeweaver LLC to assure item is not an inferior counterfeit.