K-tech Bike Bicycle Handlebar Mount for Garmin GPSMAP 64 64s 64st Dedicated slide fit GPS holder with retaining tab - fits Garmin GPSMAP 64 64s 64st Deluxe clamp base fits handlebars rails bars as small as 3mm diameter up to 45mm in diameter. Anti slip jaws work on round, square or oval horizontal or vertical struts along with flat surfaces. No tools needed