ISI Twist'n Sparkle compatible 8 gram CO2 charger, 100 units LOOSE - NOT IN BOXES - 8g CO2 non-threaded weld-sealed steel - virtually unlimited shelf-life! Uses Include: carbonated soda water (with no quinine & no aftertaste!) Antique pellet gun & toy car propellant Kleer-Drain by Mag Engineering refill CO2 cartridges FREE, FAST SHIPPING from CA or FL