Stainless Steel Rings

Pure Stainless Steel. Smallest is 1.50 inches, largest is 2.25 inches. 

One photo is next to standard #2 pen for size perspective.

 

NO electrical connection present, but can be easily added with items from our Do-It-Yourself section. A small pad or gator clip is the simplest. For other how-to ideas and instructions, check out the forums at smartstim.com.