Number of Teeth (Chordal Action)Nom. Pitch DiameterNom. Outer Diameter Nom. Hub Width Available Bore Sizes
inmminmminmmRound inSquare inRound mmSquare mm
10 (4.89%)6.51656.51651.9550 1.5, 2.5 40, 60
12 (3.41%)7.81987.81981.9550 1.5, 2.5 40, 60
16 (1.92%)10.326210.42641.9550 1.5, 2.5 40, 60