Stereo Pin 3.5 mm 2 Pole with 6 mm Collar – Description: A 3.5 mm 2-pole stereo pin with 6 mm collar is an audio connector typically used for mono audio transmission (despite the "stereo" naming, 2-pole indicates mono). It features: Connector Size: 3.5 mm plug, commonly used in audio devices. 2 Poles: One for signal and one for ground – suitable for mono audio or power applications. 6 mm Collar: A protective and supportive collar around the base of the pin, providing strain relief and allowing for secure mounting or cable insertion.