Review on Pack of 10 Small Titanium Key Rings - TI-EDC Split Rings (10mm) by Sasha Hsiao

EDIT 11/20/2016: Changed from three to five stars for excellent customer service. Without any action on my part, the seller contacted me and offered to send me slightly larger rings free of charge. When I answered, they were already on their way. I was pleasantly surprised to receive a full pack of 10 rings marked 12mm. These rings are absolutely the perfect size for what I was looking for. This type of customer service can't be beat. Original post: I was expecting an overall inner diameter of 10mm. However, they barely reach 10 mm on the outside and approach 8 mm on the inside. At this size, it won't even fit things under a standard house key. I was hoping this would be a good way to let me switch between the keys on my little titanium carabiner, but I can't even use it. I wish I had returned them in time but I was too busy at the time.