All photos © IRON41.

This fuze fits the
PMZ-40 mine.
It has a cylindrical aluminium body with a thin metal dome-shaped top.
A pressure of 70kilo+ crushes the thin metal top, pressing down the inner fuze body.
On this movement, the ball bearings find their way into the side pocket, releasing the pre-cocked striker.

This fuze also has an anti-withdrawal function.
While unscrewing, the ball bearings get driven upwards and break free into the space under the dome-shaped top.
This releases the striker as well.

Diameter : 37mm
Height : 82mm

Information and drawing thanks to M. Jochoms.