compatible with almost any type of crank when used with Profile universal adapter ** ADAPTER REQUIRED TO USE SPROCKET- - - - -25t, 28t, 30t, and 33t sprockets have 1/8" teeth36t and larger have 3/32" teeth- - - - -25t, 28t, 30t, 33t sprockets have a sprocket bolt hole, can be used bolt-drive or spline-drive36t and larger sprockets do not have a sprocket bolt hole, must be used as spline-drive- - - - -CNC machined from 7075 ALmade in the USA- - - - -Profile universal adapter available separately in the following options:19mm bolt-on19mm spline-drive22mm bolt-on22mm spline-drive24mm bolt-drive
