This is a replacement latch for the optional Extended Armrest. The rubber bumper is not supplied and should be reused from the OEM latch.
Strong & Flexible Polished material is recommended for it's smoother texture. Non-polished material will have sandy texture and show print lines more prominently. If you want to match the OEM color you will need to sand and paint the latch.
Feel free to download the model and try it out if you have access to a 3D printer!