Castline Silver patch cable 3.5mm TRS-straight to 1/4" TS-straight summing left and right channels from single stereo output to mono input with resistors (1k ohm). Mogami W2582 flexible low nose wire (XLPE insulation and a strong rubber - like outer jacket makes this cable ideal where a durable and flexible cable is needed) This cable is needed to connect MP3 players, portable CD players, cell phones, and other devices which have 1/8" (3.5 mm) TRS output to amplifier, mixer, PA systems and other devices wich have 1/4" (6.35mm) TS input Also, this cable prevents sound distortions and equipment damage. Cables assembled in the USA All cables were tested with cable tester. *If you need this cable in another length please contact us. Connectors: - Model: CT109S Stereo - Castline 3.5mm TRS. - Nickel Plated Contacts. - Heavy Duty Metal Construction. - Model: CT103S Mono - Castline 1/4" TS. - Nickel Plated Contacts. - Heavy Duty Metal Construction. Cable: - Mogami W2582 Low Nose Wire Made in Japan - 2 Coper Conductors -26 AWG - Cable Diameter: 6.0mm (0.236") - Flex Life: 22000 Cycles. - Tensile Strength: 441 N