16g: These CO2 cartridges are compact and suitable for high pressure tyres. Available as 5-piece refill packs or counter top boxes (30 quantity for 16g cartridges). Bulk box of 16g cartridges (250 quantity) are also available. 20g: These CO2 cartridges contain a mid-sized charge suitable for higher volume gravel tyres or similar (700 x 40mm or 29" x 1.5"). Available as 5-piece refill packs or counter top boxes (30 quantity for 20g cartridges). Bulk box of 20g cartridges (220 quantity) are also available. 25g: These CO2 cartridges contain a larger charge suitable for high volume MTB tyres. Available as 5-piece refill packs or counter top boxes (30 quantity for 25g cartridges).
