Express yourself and use this kit to make your own unique lanyard of any size, material, and color of your choice. Kit of small to large silicone rings and hooks in a variety of sizes to hold most any device, and mini gear carry bag. Use as replacements or to utilize the larger sizes for largest pens, lighters, or make your own creative lanyard. Inner diameter of rings 10mm = (about 3/8”), 13mm = (about ½”), 16mm = (about 5/8”) 20mm = (bit above ¾”) . You will find a size that fits your device.