1,The original cord material is 10M, but when the factory made it curling,the actual useable length can not reach 10m.
2,Most Yongnuo flashes are not compatible with TTL cord, if your flash is Yongnuo brand, please don't choose this cord.
This TTL Remote Cord provides full TTL control for Nikon Speedlites when used off-camera with Nikon SLR cameras which have the TTL hot flash shoe. It permits easy use of flash when the camera is mounted upon a bracket.
This cable has a shoe mount on the bottom of the flash connection shoe, as well as a 1/4"-20 socket.
Cable Unstretched length: 1.4m(4.6ft )
Dimensions (L x W x H)
Camera connector: 39.3x29.5x27mm
Flashlight connector: 39.1x29.5x23.5mm
DSLRKIT TTL-N(10Meter) TTL Flash Cable x1
Suitable for DIGITAL SLR cameras:
D800E D800, D700, D300S,D300,D200,D100
D40, D40x, D50, D60 D70, D70S ,D80,D90,
D3000,D3100,D3200, D5000,D5100,D5200,D7000 D7100 D600....
Compatible with ALL Nikon Brand Speedlights and other Manufactures Nikon compatible flash units, including SB-900, SB-910, SB-800, SB-700,SB-600, SB-400, SB-140, SB-80DX, SB-50DX, SB-30, SB-29/29s, SB-28/28DX, SB-27,etc; Most Yongnuo flashes are not compatible with TTL cord, if your flash is Yongnuo brand, please don't choose this cord.