Sole smoother antibacterial callus stone. Effectively removes calluses and smoothes feet. Ergonomic and durable. Infused with silver. Precision tools for expert results. Choice of professionals. See the quality. Feel the difference. premium quality german-made ceramic stone and ergonomic handle are waterproof and infused with silver to protect from bacteria and germs. This item is electronically protected. We stand behind our products and services. Visit our website for details about guarantee use and care. Www.tweezerman.com. We stand behind our products and services. Visit our website for details about guarantee use and care. Made in germany.