• 3.5mm TRS male to female stereo adapter cable with threaded locking and flush mount • Allows easy input/output setup for 3.5mm audio systems, ensuring stable audio signal transmission • Simple installation: just cut an 18.5mm hole in the mounting surface and secure the cable with the included nut • Suitable for extending 3.5mm stereo ports in cars, caravans, furniture, stereo equipment, and machinery • Compatible with smartphones, laptops, tablets, PCs, CD, MP3, MP4, and headphones • The connector body is made of high-quality ABS plastic, resistant to heat and wear • Includes waterproof and dustproof cover to prevent dust, rain, and debris from entering the port when not in use • Cable length: 30cm (11.8 inches) • Maximum mounting plate thickness: 20mm • Mounting hole size: 18.5mm • Package includes: 1 TRS 3.5mm male to female adapter cable, 1 hex shoulder nut, and 1 waterproof dust cap