Knife with a knife handle and a blade

A knife (12) comprising a knife handle (2), a blade (3), wherein the blade (3) is configured to be extended and retracted relative to the knife handle (2), a blade displacement carriage (30) and/or a reinforcing part displacement carriage (31), and a catch mechanism for indexed adjustment of different extending positions of the blade (3), wherein the catch mechanism is formed underneath a region, in which the blade (3) or an imaginary extension of the blade (3) extends, viewed from the blade displacement carriage (30) and/or the reinforcing part displacement carriage (31),

• wherein the catch mechanism comprises a catch part (35), which is accommodated in the blade displacement carriage (30) and/or in the reinforcing part displacement carriage (31), and catch openings (47), which are arranged behind one another in a longitudinal direction (L) in the knife handle (2), in order to realize a catch engagement with the catch part, and
• wherein the catch part (35) accommodated in the blade displacement carriage (30) penetrates the blade (3) in an engaged state, as well as during a movement of the blade (3) from a first into a second catching position.