Listings show true 10mm hoops and a broader range up to about 30mm. Some product specs list paired outer/inner diameters (for example, 10.0mm outer with 8.0mm inner or 12.0mm outer with 10.0mm inner).
Materials shown in listings include 14K yellow gold, sterling silver, and gold-plated constructions.
Gently open the hoop by slightly twisting or separating the post, then thread the small post through the piercing while viewing from the front or back so you can see where the post enters. You can hook the post from back-to-front or front-to-back depending on which gives the clearest view; once inserted, align and close the hoop so the post seats into the hoop for a continuous look.
Some listings include extras such as a custom gift box, small decorative charms (for example, a dangling 6mm cross), and authentication marks like a 14K stamp. Included accessories vary by product.
10mm/small endless hoops are described as suitable for lobe and upper-lobe wear and for smaller piercings such as a second hole, lip, nose, tragus and other cartilage piercings.
Care notes vary by listing; common guidance includes wiping with a polish cloth. Some descriptions also list 'air dry' after cleaning. Follow the specific care instructions provided with each product.