For processing: Schön the plastic part is not, but reasonably well finished, the cable is thick but flexible, the latch fits tightly without shaking the camera. Only the bend protection is something fall short.
Overall perfectly adequate for the price of extra tools. A good alternative to the "easy" overpriced original equipment from Panasonic. On my Lumix GX1 the part works as intended: by Press halfway Press fully and lock the knob coming correctly in the camera.