This is a cermet trimmer potentiometer with a resistance of 500 Ohms, a tolerance of 10%, and a power rating of 0.5W (1/2W). It features a 0.01% resistance accuracy, 25 turns for precise adjustment, and a pin through-hole mounting style. The dimensions are approximately 9.53mm by 4.83mm by 11.55mm, supplied in a tube packaging.