I-TTL Off Camera FLASH sync Cord Hot Shoe Cord Sync for nikon SB-700 SB-800 SB-900 SC-28 SC-17 1.8M - AliExpress
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NEEWER TTL Off Camera Flash Speedlite Cord For Nikon
Amazon.com : Godox MF12 MF12-K2 Macro Flash, Twin Macro Flash Lite, 12w 2.4G Wireless Control Off Camera Flash, TTL/Manual Mode, 3.7V/6.29W Lithium Battery, Compatible for Canon Nikon Sony Olympus Fuji Panasonic :
Profoto A1X Off-Camera Flash Kit with Connect for Nikon 901302
Amazon.com : Altura Photo Camera Flash W/LCD Display for DSLR & Mirrorless Cameras, External Flash Featuring a Standard Hot Flash Shoe, Universal Camera Flash for Canon, Sony, Nikon, Panasonic and Other Cameras :
Vello OCS-NK15 Off-Camera TTL Flash Cord for Nikon Cameras (1.5') | Vello