Chalk - HydroGen 6 - Click Vinyl Tile by Biyork - (12" x 24" x 6mm) 19.38 ft² / BoxChalk gives you that stone or concrete look without the cold feel or the hassle of real tile. Biyork HydroGen 6 click vinyl tile is a smart pick when you want a cleaner, more modern look in kitchens, bathrooms, basements, or busy entryways. The click system keeps the install moving, and the 12" x 24" format reads more like a finished tile floor than a standard plank. It is a good fit for homeowners who want water friendly performance and easier day to