Pumping action is smooth no squirts everywhere [SEP] I love these pump bottles, they don't break like the (all) plastic pump bottles do. I have a 180ml metal pump clear bottle that I got 5 or 6 years ago, if not longer & its still as good as the day I bought it. It's my favorite pump bottle, I can put a little pressure on the top with my clean up brushe and it won't squirt every where like other pumps do, I  highly recommend this item.. I bought pks of 3 in every size.