Help! I like the vase-type drip tips, but although many vendors sell drip tips, none of them I've seen give any sizes. I like the smaller ones, with a thin "neck" and can't remember where I've gotten them in the past. I'm frustrated with adding just one to my cart when ordering something else to see if it's what I want. I like to put a clean tip on my PVs daily so it's nice to have several tips and I'm running low because if (when) the PV gets dropped the plastic tip often breaks. I should probably stick with metal ones, but none of them indicate a size. Is there a reason why vendors don't indicate sizes/dimensions? This info would be very helpful.