Screw-On Jack Adapter Plug, 3.5mm to 6.35mm, M8 Thread Type, for HD 505/HD 550/HD 560 S/HD 600/HD 620 S

This Genuine Sennheiser audio jack adapter converts from a female 3.5mm jack to a male 6.35mm jack. This adapter is included in the original Contents of Delivery for headphones including the:

• HD 505
  
• HD 550 
• HD 560S
• HD 600
• HD 620S