Positive Rake Angle for optimum cutting efficiency dislodging debris. Variable Helical Flute Angle increases debris removal Wide Radial Land for increased peripheral strength. Radial Land Relief – minimises over engagement and reduces breakage Third Radial Land – stabilises and keeps the instrument central 4mm shorter handle for easier posterior access Simplified colour coding - .04 Green, .06 Orange Safe-Ended Tip – minimises ledging, perforation and zipping