Bone anchoring device

A bone anchoring device comprising:

• a receiving part having a first end, a second end below the first end, a central axis extending between the first and second ends, and a coaxial passage extending therethrough, wherein the receiving part is configured to pivotably receive a head of an anchoring element such that the anchoring element can assume a plurality of angular positions relative to the receiving part;
• a pressure member positionable and movable in the passage;
• and
• an insert member movable axially relative to the pressure member between a first position and a second position for exerting an adjustable pressure on the head of the anchoring element to lock the head relative to the receiving part;
• wherein a first engagement structure of the insert member is configured to engage a second engagement structure of the pressure member to releasably hold the insert member at the first position and to releasably hold the insert member at the second position.