Toads Pens reusable injection pens are designed to work with standard 3mL replacement cartridges. These cartridges are commonly used with many reusable injection pens and provide a convenient way to refill your pen without replacing the entire device.
For the best fit and performance, we recommend using Toads Pens Replacement Cartridges, which are designed to be compatible with our reusable pens. Our replacement cartridges are easy to install, reusable, and made to provide a secure fit for consistent use.
Compatible With:
– Standard 3mL replacement cartridges
– Toads Pens reusable injection pens
– Most universal reusable injection pen systems designed for 3mL cartridges
If you’re unsure whether your current cartridges are compatible, our customer support team is happy to help you choose the correct replacement.
Shop: Replacement Cartridges | Reusable Pens | Starter KitsInfo Box
Yes! Toads Pens universal pen needles are designed to fit most reusable injection pens that accept standard screw-on pen needles. They provide a secure, reliable connection and are available in 4mm, 5mm, and 8mm lengths to suit your personal preference.
Our universal pen needles are compatible with many popular reusable pen systems that use standard threaded pen needles. Each needle is sterile, single-use, latex-free, and individually sealed for quality and convenience.
Available Sizes
4mm Pen Needles – A shorter option preferred by many users.
5mm Pen Needles – A versatile, all-around choice.
8mm Pen Needles – A longer option for those who prefer additional needle length.
If you’re unsure whether your reusable pen is compatible, feel free to contact our team before ordering. We’ll be happy to help you choose the correct pen needles for your setup.
The difference between 31G and 32G pen needles is the needle’s thickness (gauge). The higher the gauge number, the thinner the needle.
31G Pen Needles are slightly thicker and may offer a bit more rigidity during use.
32G Pen Needles are slightly thinner and are often chosen by users who prefer an even finer needle.
The difference in thickness is very small, and both 31G and 32G universal pen needles are designed to provide a comfortable injection experience. Most users won’t notice a significant difference in performance, so the choice often comes down to personal preference.
It’s also important to remember that gauge and length are not the same thing. The gauge (31G or 32G) refers to the needle’s thickness, while the length (such as 4mm, 5mm, or 8mm) refers to how long the needle is.
Toads Pens offers universal pen needles in multiple gauge and length combinations, making it easy to find the option that best fits your reusable injection pen and your personal preference.
Reusable injection pens are refillable devices designed to work with compatible 3mL cartridges. They offer a convenient, reusable alternative to disposable injection devices.
Yes. Our cartridges are sterilized using a low-temperature ozone sterilization process.
Ozone sterilization does not produce the same color change as steam or ethylene oxide sterilization indicators.
Orders are typically processed within 1–2 business days.
Yes. Tracking information is emailed once your order ships.
No! Everything is there. If you twisted the cap off, put it back and simply pull the cap off, the cartridge holder is there. You only twist that off when you are replacing your cartridge.