Discription:
Material: High Tensile 45# Steel, chrome -plated
Gear teeth: 13T 14T 15T 16T 17T 18T (You can choose when ordering)
One set: 1 teeth wheel+ 1 fixed ring
Fits 1/2" x 1/8" chain.
Packing include: One set (one freewheel and one fixed ring )