All Wheels Manufacturing replacement derailleur hangers are produced in our Colorado shop to exacting tolerances. - CNC machined 6061 aluminum - Black anodized finish - Attaches to frame with (2) M3x12 Flat Head Screws - Fasteners Included - For use with Shimano Direct Mount derailleur Compatible with the following Trek models: - Boone (w/ Shimano DM Rear Der.) - 2018-2019 - Domane ALR Disc (w/ Shimano DM Rear Der.) - 2018-2019 - Domane SL Disc Thru Axle (w/ Shimano DM Rear Der.) - 2017-2019 - Domane SLR Disc (w/ Shimano DM Rear Der.) - 2017-2019 - Emonda ALR Disc (w/ Shimano DM Rear Der.) - 2019 - Emonda SL Disc (w/ Shimano DM Rear Der.) - 2018-2019 - Emonda SLR Disc (w/ Shimano DM Rear Der.) - 2018-2019 - Madone SL Disc (w/ Shimano DM Rear Der.) - 2019 - Madone SLR Disc (w/ Shimano DM Rear Der.) - 2019