Check the listing for details. K-EDGE 1x Race W Chain Guide - For Single Chainring, Water Bottle Attachment. Color: NA, Condition: New. Listed at 139.95 USD. The K-EDGE 1x Race W Chain Guide ensures zero-dropped chains on bikes without a braze-on adapter. Mounting from the water-bottle bolts, the World Tour proven K-EDGE 1x chain guide will prevent chain drops and reseat a derailed chain when the rider pedals forward.Frame mounted utilizing water bottle attachment points for super easy set upOptimized for 11 and 12-speed drivetrains that utilize 36t to 54t round chainrings (Not Compatible with Oval Chainrings)Fully adjustable for height, center-line, and angleTwo mounting arms are included for dialing in fit for various frame sizes (54-61cm size frames)Designed for chain retention under the most abusive conditionsCNC Machined from 6061-T6 Aluminum (no plastic parts) with stainless steel hardware