Product Description Marshalltown 3510D Drywall & Plastering Taping Knife 10 X 3 Steel From the Manufacturer Marshalltown 14338 10 X 3 Blue Steel Taping Knife with DuraSoft Handle is a flexible blue spring steel blade that is tapered for corner work. The lightweight handle is molded to an aluminum backing plate and features the resilient DuraSoft soft, durable grip. This is the most lightweight, yet durable taping knife on the market.