Hyde Tools 20550 2-1/2-Inch Flooring and Roofing Knife, Black and Silver Precision machine-ground cutting edge Hollow-ground for reduced binding 5 Degree offset angle for maximum cutting leverage Cutting tool for professional trades; ceilings, drywall, floor covering, roofing, etc Heavy duty.072-Inch chrome vanadium steel blade Cutting tool for professional trades; ceilings, drywall, floor covering, roofing, etc Heavy duty .072-Inch chrome vanadium steel blade 5 degree offset angle for maximum cutting leverage Hollow ground to reduce binding Soft-grip handle with finger guard