I've just bought some tonight after my Cactus v4 trigger decided to stop working all of a sudden, I will be using them with my SB-24 until my uncle finishes the ones he's building for me. I noticed on the eBay page I bought them from there was a list of compatable guns'
-Canon SpeedLite 580EX II, 580EX, 540EZ, 520EZ, 430EZ, 430EX, 420EX, 420EZ, 380EX
-Nikon SpeedLite SB-900,SB-800, SB-600, SB-80, SB-28, SB-27, SB-26, SB-25, SB-24, SB-23,
-Vivitar 283, 285HV
-Sunpak 30DX, 422D, 433D, PZ5000AF
-National PE-387S
-Panasonic PE-28S