Size Diameter 17mm, adjustable.

Irresistible Reasons To Buy
We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45-day guarantee.

If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase.

Buying items online can be a daunting task, so we want you to realized that there is an absolute ZERO risks in buying something and trying it out. If you don't like it, no hard feeling we'll make it right.

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