-N.C Cutter ,Cutting precision:1mm -Helical knife structure,type sawtooth knife,decrease cutting obstruction,low noise N.C Cutter , ... the oil,the lubrication and cooling.(6) Helical knife structure,type sawtooth knife,decrease cutting obstruction,low noise.(7) Balance ... money.(10) Exact and adjustable on gap gear assure knife-edge joggle exactly.running balanceable.(11) Computer system to keep ...