Ontario 8630 RAT-3 Knife Made of 1095 Carbon Steel Blade Grind: 3.9 Inch Full Flat Taper Overall Length 7.9 in (20.1 cm) Weighs 5.3 ounces Sheath Material Nylon 3.75 inch partially serrated blade Knife Closed Length: 4.03-Inch Knife Open Length: 7.8-Inch Weighs 5.3 ounces