MAVIC V.T.T. 637 MTB CRANK SET cant rememebr when i bought these ,think it was about 1991/2 i bought them from a local bike shop but only lightly used the because they hit the rear stays, the etching is clearly visible ,middle and granny ring have long since gone but the outer ring is still good with little wear ,the length is 175 mm £45.00 posted