These are two replacement cutter blades for the Wooorking 1900B electric planer (or other compatible models). When the original blades get dull or nicked, just swap them out with these fresh ones to get your planer cutting smoothly again. They come as a pair, which is handy because planer blades usually need to be changed together. They're silver in color. Installation is usually pretty straightforward – just make sure the planer is unplugged, remove the old blades, and carefully install the new ones following your tool's manual. Having spare blades on hand means you won't have to stop a project in the middle to wait for a new part. A simple, essential maintenance item for anyone who uses their electric planer regularly.