Felco Hand Saw. Model # 621. Unlike conventional saw teeth, which are filed, and alternately bent, the Felco 621 turbo-cut saw blade is taper ground and each tooth is honed to precise knife-edge sharpness. Fast, easy pull action requires less effort than other saws. Hard-chrome plated for extra tough, rust resistant, wipe-clean blade. Now improved with a longer blade, impulse hardened teeth that increase lifespan, and a redesigned shape to push more shavings out of the cut. The new coating is better at avoiding sticking.