Text copied from TM9-1985-2 German Explosive Ordnance 1953 :

Description: The cylindrical plastic body which is threaded internally at it's base to take the brass detonator holder, houses the steel striker spring, the steel striker and the felt and steel striker retaining washers which also serves to centralize the striker. The striker spindle is diametrically pierced toward it's upper end to recieve the steel detent pin, which forms the link and the loop. The detonator holder accepts, at it's upper end, the detonator cap and, at it's lower end, the detonator. The detonator holder is closed by the safety transit cap which is removed prior to the insertion of the detonator when arming a mine.

Operation: Pulling on the trip wire attached to the striker end withdraws the detent pin and releases the striker. The striker, driven by the striker spring, is driven into the percussion cap, initiating the detonation of the mine.

Employment: Designed for use in boobytraps and the stockmine.

Remarks: This igniter has been found made entirely of metal. It may also be used as a tension release device by removing the detent after affixing a tension wire through the end hole of the striker.

Length: 86mm , Diameter: 13mm
The type with the extra hole for tripwire is 1mm longer.

The version shown on the right has a bakelite collar around the threaded nipple and provides better grip.

Photo © M. Jochoms

Scans thanks to M. Mulder :

Photo of full box on the right © Patrick.

I addition to the text of the US manual, some other details can be mentioned: Bakelite fuze bodies can also have a brown color. Detonator holders were also made of zinc, forged steel, pressed steel and brass with a bakelite sleeve. Transit caps were made of pressed steel, brass or bakelite. The type that was used in the wooden mines often had no pierced hole in the top of the striker.

The metal version as mentioned in the text was intended to be used with the Riegelmine, but could be used like all others.