For maintaining your Tornado Grenades. • Medium 30wt silicone oil for use in grenade lubrication • 15ml capacity • Waterproof label • Precision eye dropper tip • Spill-proof cap • Selected for use in grenades • Keep grenade seals lubricated without leaving heavy residue. Directions: Inject 2 drops of oil into grenade once every 2 fills. *Not for use in GBB/GBBR Magazines.