This high-output, lock down lotion pump delivers 4cc of product under most applications. The unique design prevents water from entering the product making it perfect for use in the shower. The lotion pump has been used in the hair care, personal care, pet care and home care industries. They are popular for shampoos, hair conditioners and body washes to name a few. Fits most popular brands of shampoo and conditioner bottles, and any refillable 12oz to 33.8oz bottle with 28/410 neck size. Can be cut for shorter bottles, maximum dip tube length is 9 7/32 inches. Please measure the bottle size first.