The GnarWolf Chainguide ISCG-05 rev2 is designed for maximum chain retention while mountain biking or racing particularly rough gravel and CX. It is made for any bike that has ISCG-05 mount and a 1x drivetrain. The GnarWolf Chainguide will keep your chain on your chainring in the roughest and muddiest of conditions. Refer to image on this page for installation and adjustment instructions. - 8mm of chainline adjustmentvia our GuideLock quick adjustment system. No shims required. - Infinite vertical adjustment between 28 and 36T for round chainrings and 28-34T oval chainrings - Loosen one screw to flip the guide out of the way for easy chain removal without losing any of the guide's adjustments - All adjustments made with common 4mm hex key - Designed for the rigors of Enduro, heavy trail, mud and even DH riding, the Wolf Tooth engineers made this guide extremely stiff and strong while keeping it light at 44g - Specific guide shaping is optimized for use with oval and round chainrings - Installation takes just a few minutes - no need to remove your crank arms