This stacking ring is a 14 gauge square wire twisted into a spiral. It is 2 mm wide. This listing is for one stack ring. All ring sizes available. If you want to mix and match any stack rings in my Argentium stacking ring section, you can get the following discounts: 3-4 rings - 10% off - enter this coupon code - DS10OFF 5-7 rings - 15% off - enter this coupon code - DS15OFF 7 + rings - 20% off - enter this coupon code - DS20OFF You can choose from any designs in this section of my shop to get the discounts - http://www.etsy.com/shop/DogSkinStudio?section_id=7736968 Add whichever rings you would like to your cart, and enter the coupon code in the coupon box at checkout and your entire order will be discounted. Thanks for looking!