The Zefal Universal CO2 Cartridge Holderattaches to the back of the saddle or to the frame. Designed to hold 2 threaded 16g cartridges and 1 CO2 pump. Compatible with all diameters, and the rubber mount ensures a secure grip. Won’t scratch the bike. Ideal for mountain bikes, road bikes, and recreational bikes.
·Universal mount for: 2 16g threaded cartridges and 1 CO2 pump.
·Material: rubber.
·Weight: 15 g.