Each Bubble Tea Straw Set & Keepie comes with a stainless steel piercing tip which can be used to pierce through the film of a store-bought boba tea.
It should be attached to the bottom of the bubble tea straw, so that it faces downwards in the drink. The piercing tip is removable, and can be taken off if not drinking store-bought tea.
Please note: the piercing tip is sharp and not suitable for children (without supervision).