freewheel
1.freewheel can make 6s and 7s.

freewheel

1.freewheel size: 6 speed

2.freewheel packing:50 pcs/ctn

3.freewheel carton weight: net weight:24kgs gross weight:25kgs

4.freewheel carton meas:60.5*25*17cm