Guaranteed to cut straight out of the tube, 100% of the time!
Includes 12 Gundlach No. 25-AB trapezoidal-shaped straight blades for the Gundlach No. 6 Airway Knife (Crain No. 025A). The Airway knife and blades are specialty blades for vinyl installation. These blades have a square central cutout that fits on a square boss in the knife that eliminates blade wobble. The blades are reversible and have two cutting edges. They come in a clear plastic vial with a re-sealable plastic lid for storage.