THE QUARTER COIN TEST (FITS 2oz - 8oz BOTTLES) - Reduce returns by checking your size first. This Small adapter fits standard pharmacy bottles (typically 2oz, 4oz, and standard 8oz) with a 24-400 neck finish. Quick Check: Remove the cap. The threaded bottle neck (where the cap screws on) is roughly the same diameter as a US Quarter coin. Best for bottle openings with an Inner Diameter around 17.5mm - 19.0mm (0.69 inch - 0.75 inch).
SECURE ANTI-SLIP FLANGE SAFETY - Small adapters can slip inside the bottle if not sized right. We solved this with a 21mm wide Top Flange that is physically larger than the bottle opening. This creates a secure barrier on the rim, ensuring the plug can never be pushed inside the liquid, even when using firm pressure.
TRIPLE-SEAL FRICTION FINS - Designed for a leak-proof seal. The plug body is 17mm wide, but features flexible sealing rings that expand to 19.7mm. These rings compress against the bottle walls to create a watertight friction seal, allowing you to invert the bottle and draw medication bubble-free.
COMPACT 10MM DEPTH PROFILE - This adapter features a 10mm deep skirt that sits strictly within the bottle neck. This compact design is ideal for smaller volume bottles, ensuring the adapter doesn't displace too much liquid while maintaining a firm grip.
HYGIENIC & REUSABLE SUPPLY - The 4.4mm center hole fits standard 1ml-10ml slip-tip oral syringes. Made from medical-grade, BPA-Free LDPE, these plugs are washable and reusable. Note: Flush-Fit Design allows the original Child-Resistant Cap to screw down perfectly over the adapter for safe storage.