The Hyde 12-inch blue steel joint knife for drywall joint taping, finishing and patching is 23% lighter than conventional taping knives. Also use as smoothing tool and wallcovering trim tool. The Hyde Pro line of taping knives sets the professional standard. They feature rust-resistant stainless steel blades, double hollow-ground for the perfect flex-points, and comfort grip handles. These tools are the solution for paint pros and others who use paint preparation tools, and drywall taping tools extensively. Guaranteed Forever!