Products include: 50PCS perforated injection adapter
Size: top diameter: 21mm/0.82in Height: 45mm/1.77in Middle hole: 3.8mm/0.149in
Easy to use, just put the adapter end cap on the bottle mouth and press it in to fix it, and insert a syringe into the hole mouth to connect and use.
The function is to form an airtight and leak free seal. The thread of the bottle injection adapter forms a leak free seal with the bottle, ensuring that even if the bottle is upside down, it will not waste liquid, will not leak out, and can get the amount you need
It can be used for one-time use, or used repeatedly after the internal medicine is cleaned. You can replace the original bottle cap without removing it: you do not need to remove the universal bottle adapter after each use. You can easily tighten the original bottle cap and remove the adapter end cap after the bottle liquid is used.
Use: It is a necessary tool for dentists, hospitals and clinics to dispense medicines, and it can also save injectable oral medicines for your pets.