These are the 55mm Extensions for use with the Futaba GY520 Gyro (FUTM0810).

FEATURES: Futaba J Male Connectors

INCLUDES: One Red Extension One Black Extension

REQUIRES: Installation between gyro and receiver

SPECS: Length: 55mm (2.2")  

BOX DIMENSIONS: 2.38" W. X .25" H. X 2.38" L. BOX WEIGHT: .02 LBS.