The Black Ruby allows to penetrate the bone much easier than traditional osteotomes thanks to the geometry of the tip: conical at the end and then parallel. This allows a huge benefit in implant site preparation and sinus lift. Black Ruby is treated with DLC (Osseotouch exclusive!), which reduces friction and heat production close to zero. Black Ruby is the top tier in technology, functionality, and design, the best osteotome in the world!