Strobe adapter following the common "YS Adapter" standard of 12mm thick mounting boss with bolt mounting hole. Useable with Z-240, Z-220, Z-220F, Z-220S, D-2000Wn, D-2000W, D-2000S, D-2000, D-180, D-180S and Z-22 strobes. Except for Z-22 strobe, an INON "YS Adapter Fixing Bolt" must be used together with the YS Adapter. There are two main methods to attach Z-240, Z-220, Z-220F, Z-220S, D-2000Wn, D-2000W, D-2000S, D-2000, D-180 and D-180S strobes to your camera/housing system: Z Adapter. Direct connector part between strobe and arm system. YS Adapter with INON YS Adapter Fixing Bolt (Both an INON "YS Adapter Fixing Bolt" and an INON or other brand "YS Adapter" are necessary.)