The Klein Tools Lightweight Lock back Knife is made with a 2-3/4-Inch AUS8 stainless steel blade hardened to 58-59 RC. The 4-1/4-Inch black handle offers ideal blade storage, and is made from impact-resistant nylon with a rubber insert for comfort. The blade features a reversible thumb stud for 1-handed opening, and can be locked in place or sharpened.