This economy PVD 316L stainless steel eyelet is a great bargain. Every gauge from 10 gauge through 2" gauge has a groove for the included o-ring.
The 10 gauge through 00 gauge eyelets have a 5/16" wearable length, the 1/2" through 7/8" eyelets have a 3/8" wearable length, and the 1" through 2" eyelets have a 7/16" wearable length. All eyelet wearable measurements are from the flare to the included o-ring.
These eyelets are available in a variety of fabulous colors! 14g and 12g, and larger gauges are only available in a few colors.