DeWALT DWHT10319 Utility Knife, 3/4 in W Retractable Blade, Tool Free, Carbon Steel Blade, 5 Blades Included, 6-1/2 in OAL DeWALT Utility Knife, 2-7/16 in Blade Length, 3/4 in Blade Width, Retractable Blade, Carbon Steel Blade, Tool Free Blade Change Method, Blades Included: 5, 0.024 in Thickness, Ergonomic Handle, 3-1/2 in L Handle, Polypropylene/Zinc Handle, 6-1/2 in Overall Length, 1 in Overall Width, Applicable Materials: Carpet, Drywall and Cardboard