You asked for it and we responded! Let yourself be surprised by the efficiency of a wisely designed tool! An unheard feed-rate! up to 20 meters per minute (800ipm)! WE REVEAL THE SECRET: 34 holes specially designed for lubrication and material discharge! A unique mixture of various grain sizes diamonds expertly designed to give the best of the performance! Superb hardness of the mixture of sintering metals that reach up to 600 Vickers! We have revealed the four secrets that make the tool: tenacious, aggressive, non-deformable, silent, durable, and suitable for all natural and engineered materials.