MEASURES 66.5MM / 2 5/16" CENTER TO CENTER OF SCREW HOLES SUPER HIGH QUALITY LENS, GOOD FOR 99.9 POINT RESTO'S THIS LENS FITS ONLY THE EARLIEST ONES OF THESE MODELS MOST WOULD BE CALLED THE "K0" BUT EVEN SOME OF THEM USED 2 OR 3 DIFFERENT LENS CA100 CA102 CA105T CA110 CA160 CA200 CA72 CA77 CA95 CB160 CB450 CB72 CB77 CB92 CL160 CL72 CL77 CT200 CT90 P50 S65 S90 327C @ TAIL_LENS SCREW 3MM_X_60MM 93700-03060-0A 1/21M (B3x60) (92M)SOLD EACH.. THESE FIT OUR (51H) TAIL LENS. B3x60 (92m)