The new product LSS of male gram company exceeds collet of long and thin cutting tool pointing to shape to apply to difficult treatment place (be like model antrum) deep antrum treatment, with the measure with chief L1=200mm, end jumps to still assure to be in 6µm less than. Follow is static pressure expand the advantage of the principle, outstanding damp is decreased brace up characteristic, agree with auger, the working procedure such as He Jingxi of bore with a reamer. Fit product of HSK A63 interface, index of its dynamic balancing can achieve G6. 3/15000 turns. CNC Milling