Medical Grade: Dab Nail Hive Ceramics (Patent Secured for 14 years): http://hiveceramics.com/company-profile Patent Information for Hive Ceramic Nails: http://pdfpiw.uspto.gov/.piw?Docid=D0752727&homeurl=http%3A%2F%2Fpatft.uspto.gov%2Fnetacgi%2Fnph-Parser%3FSect1%3DPTO1%2526Sect2%3DHITOFF%2526d%3DPALL%2526p%3D1%2526u%3D%25252Fnetahtml%25252FPTO%25252Fsrchnum.htm%2526r%3D1%2526f%3DG%2526l%3D50%2526s1%3DD752727.PN.%2526OS%3DPN%2FD752727%2526RS%3DPN%2FD752727&PageNum=&Rtype=&SectionNum=&idkey=NONE&Input=View+first+page