DIMENSIONS: Inside diameter: 0.6inch (15mm), Outside diameter: 0.82inch (21mm); Wire Thickness: 0.12inch (3mm)\r\nMATERIAL: Metal, Non welded O-ring with good load bearing characteristics, Easy to install and removal\r\nSURFACE: Electroplate, Sturdy and durable, not easy to fade; Ideal for use on many items and you can use two together as a webbing adjuster and lock\r\nMULTI-PURPOSE: Metal o ring can be used for numerous applications such as harnesses, clothes, dog leashes, backpacks, or purse strap etc \r\n\r\nNote: \r\nSince the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. \r\nMeanwhile, please be reminded that due to lighting effects, monitor\'s brightness / contrast settings etc, there could be some slight differences in the color tone of the pictures and the actual item.