Replacement Audio upgrade Cable with Twist-to-Lock connector deign Compatible with Audio Technica ATH-M50x, ATH-M40x, ATH-M70x, ATH-M60x Headphones and Compatible with Sennheiser HD598, HD558, HD598 SE, HD598 Cs, HD598 SR, HD599, HD569, HD579 Headphones. Connector: 3.5mm Male to 2.5mm Male & 6.35mm adapter, the 2.5mm end jack comes with Twist-to-Lock connector deign the same as the the Original cable, the 3.5mm jack fit the phone with the thicker case. Length: 1.5meters(4.9ft), package include: 1 replacement cable (there is no headphone include). Cable Diameter : 4mm,cable material:the inside cable is OFC Copper wire. The 2.5mm end on this cable Compatible with Audio Technica ATH-M50x, ATH-M40x, ATH-M70x, ATH-M60x Headphones and Compatible with Sennheiser HD598, HD558, HD598 SE, HD598 Cs, HD598 SR, HD599, HD569, HD579 Headphones. Replacement Audio upgrade Cable with Twist-to-Lock connector deign Compatible with udio Technica ATH-M50x, ATH-M40x, ATH-M70x, ATH-M60x Headphones and Compatible with Sennheiser HD598, HD558, HD598 SE, HD598 Cs, HD598 SR, HD599, HD569, HD579 Headphones