Steering Tie Rod Bracket Bar Fly 4 Stem Cap Bar Fly Bracket 4 Stem Cap to replace the 1 1/8 "steering rod cap. You can mount one of the 7 accessories included including computer and GoPro mounts Included in the package: BF4 aluminum bracket with screws Thickness BF4 4mm 7 cyclocomputer adapters: Garmin, Polar, Wahoo, Mio, Joule, Cateye, Bryton Gopro support Light support not included in the package Cycle computer compatibility: Garmin Edge Series 200, 500, 510, 520, 800, 810, 820, 1000, 1030, Touring Watches 910XT, 920XT Polar M450, M460, V650 Wahoo ELEMNT and BOLT Mio 500, 505, 505HC Cyclo 200, 205HC, 210, 315HC, 400, 405, 405HC, 505HC, 605HC Magellan 315, 505 Powertap Joule Cateye Wireless models Master, Strada, Micro, Velo Bryton 100, 300, 310, 330, 530, 10, One, 410