Crank Set or Singles - Babymaker Pro / Babymaker II

This set includes the following: 19"  Left/right crank 165mm for Gates carbon drive chainwheel, sand blast Black, w/o logo, Spider BCD in 130mm. 23"  Left/right crank 170mm for Gates carbon drive chainwheel, sand blast Black, w/o logo, Spider BCD in 130mm. Pre-Assembled Spider Bolts and Nuts. Left Crank Bolt and Crank Bolt Tool Bottom bracket CDX Carbon Gates Chainring/Front Belt Wheel - 63T, BCD=130mm, Mounting Thickness=3.1mm, Width=11mm, Black   This crank set is compatible with Babymaker Pro and Babymaker II.