Advance Equipment’s Radius Skimming Blade drywall tool can reportedly be used with a single hand for a natural drywall finishing feel. The blade is shaped to hold mud, making it ideal for skimming patchwork or achieving a Level-5 drywall finish, according to the manufacturer. Advance Equipment says that with its offset blade and radius corners, the thin and flexible skimming blade is ideal for smoothing and for using behind finishing boxes for less sanding. The stainless steel Radius Skimming Blade is 3 1/2 inches in depth and is available in 10-, 12-, 14-, and 16-inch lengths.