ADI blind drill

Diamond drill bit for granite, marble and clinker. Diamond drill bit for hole drilling, so-called “stone worm” drill bit or more commonly known as blind diamond drill bit. Used for making non-penetrating holes in grooves, material recesses and for supporting marble, granite and porcelain stoneware. ADI blind diamond drill bits are of high quality and drill cleanly. “Stone Worm” model diamond drill bits in several different sizes.