1.       Our main products is chainwheel&crank,we have many years of experiences in manufacturing bicycle parts,and especially chainwheel&crank.

2.       Our crank have two styles：The round hole crank and the square hole crank.

1)      The crank length of the round hole crank:89mm,102mm,114mm,127mm,140mm(22 bicycle),152mm(24 bicycle)，165mm(26 bicycle),170mm and 175mm(28 bicycle).

2)      The crank length of the square hole crank:89mm,102mm,114mm,127mm,140mm,152mm,165mm.

3)      The crank length of the children bicycle:89mm,102mm,114mm,127mm,

3.       The chainwheel teeth:24T,26T,28T,32T,36T,40T,44T,46T,48T,52T,the smallest is 24T.And our chainwheel have so many styles to let you choose,if you have any other request,you can send your pictures of the products which do you want,and we also can satisfy you.

4.       The B.B. Axle hole:16mm.

5.       The threaded:16*1.25mm or 9/16.

6.       The pin hole:0.90cm/0.95cm.

7.       Finish:ED,CP,UCP.

8.       Packing:one pair in a plastic bag .then 50 PRS       in a carton.

9.       Size:89,127*32T,28T,24T.

10.Qty:50 PRS

11.N.W/G.W:19/20 KGS

12.MEAS：38*20*19 CM.