What's in the box:

1 X 22.2mm TT/Aero Handlebar Mount Stem Mount for Garmin Edge Polar CatEye Computer, Model 2

Perfect for mountain biking, cyclocross, triathlon, touring and cyclists who prefer this setup.

Features:
Precision machined, 6061 T6 Aluminum alloy.
Compatible with many types for Garmin computers.
Secure connection to bike with four locking engagement points.
For 22.2-22.4mm aero bar extensions.
Pivoting two piece design offers multiple mounting positions based on rider preference, hydration systems, and aero bars.

Specification:
Material: Aluminum + PC
Color: Black
Model: Model-1 / Model-2 / Model-3 (Optional)
Compatible Computers:
Model-1: for Garmin CatEye CC-PA100W/500B CC-RD300W/310W/400DW/410DW/420DW/430DW/500B CC-VT210W/220W CC-MC200WCC-GL10/11/50/51 CC-PD100W CC-COM10W
Model-2: for Garmin Polar V650 M450 M460 GPS
Model-3: for Garmin EDGE 25 200 500 510 520 800 810 820 1000 1030 GPS
Mount Hole Size: 22.2-22.4mm
Package Size: 90 * 40 * 25mm / 3.5 * 1.6 * 1.0in
Package Weight: 45g / 1.6oz

Package List:
1 * Stem Mount
1 * L Wrench