Fine blade looking like a pen. If not in use the blade is protected by a clear plastic tip. By pressing the button like it is known from ball pens the blade comes out and is lcoked in place. The blade can be brought back to safe position by clicking the side button.
Fine blade out of the clear protection tip for work.
Extended and locked blade position
By shortly clicking the secure pin on the side of the housing the blade jumps back to secure position.