Features and Benefits:?Double Truss Design guides blade for straight window cut-outs?Fang Tip delivers fast plunge cutting for window cut-outs?FANG TIP ??Floor Guard shields teeth from floor contact during bottom plate cut-outs?NAIL GUARD ??Unique Blade Geometry protects against floor impacts during bottom plate cut-outs?Unique design protects against tooth fracture when cutting nails between studs and joistsThe flush cut SAWZALL? blade has been engineered to solve the unique frustrations encountered during window and door cut-outs. The unique design provides straighter cuts and protects the blade and teeth when cutting bottom plates.