These are Amika Pumps for 1 liter shampoo + conditioner bottles. You can buy a buy a set of two or a single pump incase you need a replacement. Liter Pumps how-to:The pumps will need to be opened/unlocked prior to putting them in your liter-sized bottles -- these pumps have a tight lock on them (so that you can re-lock if needed for travel or storage, and be assured nothing will leak)! please hold the dip tube (straw like portion) in one hand, just below where the pump sticks out from under the threaded cap, and place your other hand on the top of the pump (that dispenses product). twist the hand on the top portion of the pump (where product dispenses) away from you, and the hand on the dip tube/just under the threaded portion of the lid towards you.
