Mauser 1898 rifle/carbine cleaning kit (for standard weapon of the German Wehrmacht during the Second World War). The set made after the war. No stamps. The shade of green paint of the case and the color of bakelite oil can be slightly different from what is shown in the photo. Also on the case may be some minor scratches and dents that do not make the set flawed or discounted.
The kit includes an oil can (usually bakelite), brushes for the barrel, a chain for pulling the brushes through the barrel, a brush for cleaning parts of the weapon, rags).