New Longer Blade:The new 3-5/8 in. long blade lets you cut through thicker insulationConsistent Edge Quality:The precision ground blade is double-beveled on all three edgesHigh Carbon Spring:Hardened and tempered for strength, the blade stays rigid, but flexible enough not to breakFeatures:7-1/2" overall length3-5/8" beveled high carbon spring steel bladePlastic, non-rollaway handle ...