A high quality metal CO2 soda siphon-this offers reliable service,-good craftsmanship-and excellent value. Made with a tough composite plastic head , aluminum body with red finish, and metal charger holder- these machines are compatible with all of the CO2 cartridges found on our site. Quality construction and valve mechanism makes this a reliable- safe unit that will provide years of service. We have tested these and find they are very reliable and affordable.