Default Keyring comes in 2 colours and sizes; Brass and Stainless Steel, 15mm and 25mm.
Even though key rings can be a hassle to put on, they are no doubt the sturdiest hardware and they are also rust-free which makes them the perfect hardware if you love going to the ocean or even swimming.
Circle Clasp comes in 3 colours and 2 sizes; Gold, Silver and Black, 29mm and 19mm.
They are made of Zinc Alloy and the colours are coated on and can wear off easily if you are a rough user. Once the coating has worn off, the clasp can be prone to rusting.
Circle Clasps also do not have any swivel, which can cause the tags to hang in an awkward position depending on the collar that your pup is using.
Lobster Clasp comes in 3 colours; Gold, Silver and Black.
Lobster Clasp is able to open rather wide and can fit majority of the collars/harnesses or any other hooks or rings that you will be hanging your tags on. However, Lobster Clasp can look at little bulky as compared to the U-Clasp.
U-Clasp comes in 4 colours; Gold, Rose Gold, Silver and Black.
U-Clasp is able to fit collars and harnesses with thicker hardware but it might be hard to remove without the right angle.
Trigger Clasp comes in 1 colour; Rose Gold
Trigger Clasp is longer and might not be suitable for pups that are shorter as it can cause the tag to hang lower. It will also NOT fit collars and harnesses with thicker hardware as the clasp opening is rather small.
Hope this little explanation on the hardware will help you to make the right choice. If you are still unsure, feel free to contact us!