Choose between a flexible blade with a taper and a mirror finish for easy cleaning, or a stiff blade with a reduced taper for scraping. Ragni putty knife blades are taper ground for a lightness that doesn’t compromise strength or flexibility. Unlike other knives on the market, we added an extra rivet, so the handle won’t come loose. Our Putty knives are a versatile tool that can be used with putty, drywall filler, wood filler and many other materials.