I have Nikon D90 ,Sekonic L-358, Sb-910. Does this cord works between the Sekonic light meter (flash cord mode) and the flash?
This is a standard PC to PC sync cord, so if that is the connection of the two devices you are attempting to sync, then this should work fine. You'll have to read the owner's manual on your Sekonic to see if this will work the way your are intending.
Something to consider, 3' is the maximum length. Coiled length is much shorter, and at 3' there is substantial tension from the spring cord when extended. Depending on your use, you may want to consider non-coiled, or longer lengths. This particular cord works great for attaching a strobe/speedlite to a Pocketwizard or similar device and hanging on the light stand. The coil prevents excess cord from dangling and getting in the way while allowing varying lengths to be utilized.