Original WWII German replacement 8cm Gr.W.34 mortar parts. Many parts are still partially coated in a red sealant to provide corrosion protection. The coating is original German also.
If your legs don't lock in position, well then you probably need these parts. This is the toothed plate in the bipod assembly that engages the legs. There is no specific left and right side, just turn the part over (surprisingly simple for German equipment, I guess they made everything else complicated enough to compensate for this one lapse in complexity).
Parts are in great condition. Markings may vary; some parts have no markings. Only 4 available - no hope of ever finding more.