The O Ring flash Adapter creates a very special lighting effect, there are no electronics, no flashtubes and no cumbersome cables! It uses a clever system of internal prisms, reflectors and light-shapers to distribute the light emitted from the flash unit. MODEL: F160, is suitable for: NIKON SB800 + D70S / D300 / D200 NIKON SB600 + D1 / D2 / D3 / D3X/ D700 CANON 550EX 580EX/580EX II + REBEL XSI XS XTI T1I 500D 450D 400D 350D 300D