A Lockback is named for the rocking lock bar visible on the top of the knife. Opening the blade causes the "rocker" to lock against the blade so it locks open. Locking systems are essential for folding knives because they prevent the knife from closing on your hand during use. This knife features a durable Leymar™ handle and AISI420 stainless Japanese steel blade that is 1/8" thick, nearly twice as thick as many ordinary pocket knives, which provides for a more secure lock. Comes with a heavy-duty Kelvlon™ sheath. Measures 4-7/8" closed, 8-7/16" open. Limited lifetime warranty. Gift boxed.