Miche Primato Pista Track Crankset 170mm ISO taper. Brand new never installed - no scratches, but minor shop wear on the decals, please see pics. This is the much desired higher quality vintage version of these cranks, which have an ISO (same as Campy/SG75) square taper interface. Installation note: A 107-109mm ISO spindle will give the correct 42mm chainline for most Track hubs. If you want to use a more common 111mm bottom bracket, you can add a 1mm spacer behind your cog to get a straight chainline.