Highly hardened ball bearing steel and high gloss finishWave teeth with reinforced tulip effecttulip-shaped tooth heads provide a precise cutting surface, narrowing tooth necks provide much freedom for the remaining hairlower thinning degreeenables easy, comfortable work during dynamic cuttingdouble grinding process on the Ultra-SliceDGT cutting edgeless friction, less force required for a smoother cutuniform cutting pressure over the entire cutting edgeless strain on scissors and handduo-screw system ensures backlash-free adjustment of the flat gearunscrewable finger hook and replaceable finger ring inserts