The Gundlach No. 6 Airway Knife holds specialized blades for vinyl installation. The Crain No. 025A Airway Straight (Gundlach No. 25-AB) and Crain No. 026A Airway Hook (Gundlach No. 26-AB) blades are used with this knife. Comes with one No. 025A straight blade. These blades have a square central cutout that fits on a square boss in the knife that eliminates blade wobble. The blade holder has a long neck and an optimal angle for making cuts in sheetgoods materials. The knife body has finger contours to enhance grip. The knife halves open for blade storage by loosening the case-hardened fastener. Net weight: 6 oz.

Note: The No. 26-AB Airway Hook Blade can also be used with the No. 5 Ward Knife. The blade is inserted with the knife's screw passing through the square hole in the blade.