This lora generates a metal collar accessory with attached ring that can be used in different settings (fashion, fetishwear, RP etc). It usually presents as a black band with silver clasp in the front. With prompting you should be able to generate different looks such as solid gold or silver. It is designed to be flexible and works well with numerous checkpoints.
The activation text is: m2tn2ck
There is currently no simple metal collar lora for SD1.5. They are either part of more elaborate bondage loras or they were removed by the creators. So maybe someone will find this useful.
TIPS:
Adetailer is highly recommended if not required depending on checkpoint unless you want some old or fugly looking models.
You can prompt for matching bracelets/cuffs by using wrist cuffs or cuffs in your prompt.
The lora works very well with inpainting.
Mixing with other loras can be problematic in terms of anatomy and requires experimentation, but playing with weights usually helps.
Try increasing steps if the metal ring attachment is not rendering correctly.
It probably isn't possible to attach chains or rope to the collar ring since the dataset didn't include those types of images.