The Bar Fly 4 Max is an "out-front" mount made specifically for larger cycling computers. Modular system mounts with most computers and accessories. Features: Fits 35mm and 31.8mm handlebars (w/ shim) Includes everything you need to mount most bike computers and accessories The 4 Max fits nearly all bike computers including the larger Garmin Edge 1000 series Injection molded specialty nylon mount Includes: Nylon mount with hardware 7 Computer heads: Garmin Polar Wahoo Mio Joule Cateye Bryton GoPro base Light mount Shim for 31.8 handlebars Di2/EPS mount