Weight: Measured 42g (variations may occur) Materials: Nylon, Stainless Steel (bolt) Applicable Mounting Diameter: 31.8mm, 25.4mm Mount Base: For Garmin Accessories: Hex wrench *Regarding compatibility with Garmin mounts for cycle computers other than Garmin, please check the documentation of each manufacturer before purchasing. *Mount base can be changed to Bryton or Wahoo. Please inquire. This is a handlebar-mounted cycle computer mount. Two nylon rings for handlebar diameters of 31.8mm and 25.4mm are included. [Add-ons] You can add a smartphone Garmin adapter (adhesive type) for 200 yen each. If you wish to add one, please let us know the required quantity before purchasing. The outer box is not included to keep the thickness within the shipping standards. Please be aware of this before purchasing. We will ship via anonymous delivery.