Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound inSquare inRound mmSquare mm
10 (4.89%)6.51656.71701.9550 1.5, 2.5 40, 60
12 (3.41%)7.819882031.9550 1.5, 2.5, 3.5 40, 60, 90
16 (1.92%)10.326210.52671.9550 2.5, 3.5 60, 90