The Wolf Tooth GnarWolf Braze-On Chainguide rev2 provides maximum chain retention in the roughest gravel, CX, and road races. Designed specifically around 1x wide/narrow chainrings, the GnarWolf Chainguide rev2 will keep your chain glued to your chainring in the most extreme of conditions. No other gravel, road, or CX chainguide is as rigid or as easy to adjust as the GnarWolf.