healix pro gold hand files are quality files which feature a better nickel titanium construction.their variable taper and advanced flute design offer efficiency to achieve consistent shaping, even under calcified canals. features of healix pro gold hand files easy only one instrument sequence whatever the canal shape colour coded and easy to follow protocol drying and obturation solutions specifically designed for protaper files, they have same colour-codes for instant identification fast only 3 instruments needed for most cases - high cutting power efficient apical taper for good canal cleaning fantastic debris removal due to the unique 'multiple taper' design of these instruments package contents pack of 6 of individual files (sx, s1, s2, f1, f2, f3)