1、Replacement Helix Plug Headphone Adapter U-174 / U Type male or female plug David Clark Helicopter Headphones. 2、With this adapter, you can repair damaged helicopter headphones without having to buy new helicopter headphones. 3、Use the NEXUS TJ102 series (U92A / U) in-line socket and TJT120 panel mount jack. The connector is also used in many Rally Car and off-road racing communication systems. 4、Excellent workmanship to ensure high quality product. 5、Easy to install and use. Feature: Replacement Helix Plug Headphone Adapter U-174 / U Type male or female plug David Clark Helicopter Headphones. With this adapter, you can repair damaged helicopter headphones without having to buy new helicopter headphones. Use the NEXUS TJ102 series (U92A / U) in-line socket and TJT120 panel mount jack. The connector is also used in many Rally Car and racing communication systems. Excellent workmanship to ensure high quality product. Easy to install  and use. Specification: Connector: Female; Male(Optional) Material: ABS Color: Black Usage:Switching Connection:Plug In Output voltage: None Output type: None Package list: 1 * Connector Note: The actual product color may deviate from the photo due to light. There may be a slight deviation in the measurement of product.