What's in the box:

1 X CO2 Cartridge Holder Bracket for Road Bike Water Bottle Cage Mount (Black), Black

This bracket is designed to hold CO2 cartridges. It is easy to install under the water bottle cage.

Features:
Made of aluminum, super strong and light.
Easy to install under the water bottle cage.
Can hold 2 CO2 cartridges.
Note: Bracket only, cartridges and water bottle cage are not included.

Specifications:
Material: 6067 aluminum
Dimension: 8.5 * 7.3 * 2cm / 3.3 * 2.9 * 0.8in
Weight: Approx. 9.7g / 0.3oz

Package List:
1 * CO2 Cartridge Holder
2 * Bolt