ZTTO bike computer holder bike watch timing GPS mount stem top cover holder phone for Garmin Bryton Cateye parts

Lightweight bike computer holder from ZTTO suitable for GARMIN, Bryton, and CATEYE bike computers replace the upper stem cover materials: CNC aluminum alloys weight: about 19 grams per set package: computer holder *1 GARMIN adapter *1 Bryton adapter *1 CATEYE adapter *1 suitable for GARMIN, Bryton, and CATEYE bike computers replace the upper stem cover