Nipple Jewelry Noose Showgirl Black Chain Hematite Adjuster Non Piercing Unpierced Non-Pierce Just slide the hematite ball for a comfortable fit. Adjustable for 5mm(0.2") - 16mm(approx. 0.63". almost same as AA size battery's diameter) maximum diameter of nipple. Noose: fine stainless wire, silicon rubber* protection tube for upper nipples and gemstone hematite adjuster ball. * using medical use silicon rubber made in Japan. Dangle: approx. 30cm(11.8") black color brilliant special cutting aluminium chain, clear color Swarovski glass beads Using Japanese top brand's high durable color metal parts. Shipped from Japan within 48 business hours. Normally take 10days to arrive to North America. Shipping as "Fashion Straps" on customs declaration label. Brand name and logo of BoDivas are invisible on envelope. Also available on Amazon Prime (ASIN: B07B9XTDYP).