This cosmetic treatment pump is a 20-410 black smooth pump with a 3 3/4" dip tube. This treatment pump can dispense many products from lotion, to liquid make-up, to oils and liquid soaps. Treatment pumps are well known for dispensing precise amounts of product, most commonly thinker liquids including gels, heavy creams etc. and come in a variety of outputs. They pair perfectly with any plastic or glass bottle.