Terminology, reference 8 = (8 x 1/8 = 1") B = British Standard, -1 = Simplex (one row of teeth)
Last 2 numbers denote number of teeth
e.g. 81.38 = 1” pitch, Simplex, 38 Tooth Sprocket
To suit British Standard Roller chain :- 16B-1 (B.S. Reference), 110066 (Renold), 8SR (Morse)
