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Taper Lock 2517 BSW Bushed Metric Sprocket
For ISO 12B-2 Roller Chain
21 Teeth
136 mm Outside Diameter(de)
127.81 mm Pitch Diameter(dp)
108 mm Hub Diameter(dm)
44 mm Width(A)
30.3 mm Teeth Width(B2)
Material C1045 Steel Form 2, 1/2inchx12 tpi BSW Threads