Zefal CO2 Cartridge Holder

Universal cartridges mounting system on seat post or frame for 2 threaded cartridges and 1 CO2 inflator (for instance Zefal's EZ Control)???
 
Features

• Works with all diameters
• Rubber part ensures a good grip
• Doesn’t scratch

Technical

• Material: Rubber
• Mounting: Universal mounting system on seat post or frame for 2 threaded cartridges and 1 CO2 inflator (for instance Zefal's EZ Control)
• Weight: 15g