The Bar Fly Race Flipper is an aluminum accessory mount for GoPro Bases, including Trek Bontrager BLENDR. The Race Flipper bolts directly to a stem mounted GoPro Base, putting your computer front and center with no handlebar interference. It can be "flipped" up or down depending on the size of your computer and cable clearance. The Race Flipper comes with a Garmin computer head installed, plus heads for 5 other popular brands of computers. The Flipper features an adjustable view angle. Race GoPro Base is compatible but not included. The computer mount is compatible (subject to cable clearance on your bike) with large computers like Garmin 1000 series and Wahoo Elemnt in general, they only fit on the "flipped up" position, smaller computers, up to 3.5" long, fit in the "flipped down" position, 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, Cateye Wireless models Padrone, Strada, Micro, Velo, Bryton 100, 300, 310, 330, 530, 10, One, 410, Bryton Rider 60/ Rider 200/210 (Use Garmin head), Lezyne Micro, Mirco C, Mini, Macro, Super and SuperSE, Powertap Joule (Lezyne and Powertap computer heads are not included with BF Race mounts but are available for purchase) Included in Box: Bar Fly Race Flipper mount, computer head mounting bolts, 6 Computer heads: Garmin, Wahoo, Cateye, Bryton, Polar, Mio, 2 additional mounting screws (M4x8mm flat head), for Race GoPro (screws included with Race GoPro are too short for Flipper). Use this out-front bike mount as a Wahoo mount or a Garmin mount. NOT included in box: Trek Bontrager GoPro base (shown in photos) - this is an optional item from your Trek dealer or Bontrager online. It is different than the reflector mount that comes with the bike. There are different GoPro bases depending on stem model.