The Approx dimensions of a 1/2×13 Chain Sprocket are typically as follows:

Sprocket Diameter: 59.4 mm

Boss Diameter: 38 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 13 Nos.

The Approx dimensions of a 1/2×16 Chain Sprocket are typically as follows:

Sprocket Diameter: 71.4 mm

Boss Diameter: 47 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 16 Nos.

The Approx dimensions of a 1/2×17 Chain Sprocket are typically as follows:

Sprocket Diameter: 75.4 mm

Boss Diameter: 54 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 17 Nos.

The Approx dimensions of a 1/2×20 Chain Sprocket are typically as follows:

Sprocket Diameter: 87.5 mm

Boss Diameter: 64 mm

Teeth Pitch:1/2″

Attach Chain:08B-2

Number Of Teeth: 20 Nos.