Ribbed wall. DIP TUBE IS 24cm. This pump will fit most standard plastic and glass bottles with a 24410 neck. We recommend you stress test all your packaging before putting it on the market.
When screwing onto a glass bottle the skirt must be screwed tight - and must be screwed one more rotation once the wide part of the bottle neck is reached. You will see a slight splaying of the bottom of the skirt as you force this last rotation.
