No caps for these! I bought them from SKS and they were out of stock of caps and I couldn't wait so I bought more from somewhere else with caps, and forgot all about this sleeve - 144 little half-dram shorties (just shy of 2mLs) that we use all the time for samples of essential oil blends. You can easily purchase a choice of caps from SKS, about $30 a bag for 144.
Here is the website for this item, original cost was $38.88 https://www.sks-bottle.com/340c/fin3.html
This place sells orifice reducers and caps for this finish size 13/425 http://www.abundanthealth4u.com/Individual_Parts_for_Bottles_s/278.htm
If you need more pics pls let me know, thanks for looking!!