48 Split Ring Fishing Lure， Lanyard， Dog Tag Connector Nickel Plated Spring Steel 12mm Made in the USA<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>O.D. Tolerances: Steel and Stainless Steel + .015 - .005</li><li>Approx. thickness .046 in / 1.17 mm</li><li>Outside Diameter .484 in / 12.29 mm</li><li>Nickel Plated Stainless steel</li><li>Approx Inside Diameter .392 in / 9.96 mm</li></ul></div><img src="http://ecx.images-amazon.com/images/I/512mY1Woz%2BL.jpg" noproxy>