E.Z.D. Glazer DeGlazing Tool with Extra Screw-On Replacement Blade Aids in the De-Glazing of Glass Installed with Silicone, Foam Tapes, Butyl Tapes and Other Flexible Materials Blade Lays Flat on the Glass and Slides Into the Glazing Pocket. A built-in hand guard lets you work right next to the glass for good leverage and a deep cut when needed. This newer model replacement blade will not fit the older model which has to be welded on. Includes: (1) CRL E.Z.D. Glazer De-Glazing Tool and (1) Extra Replacement Blade.