SK NO taper shank is in conformity with AT3 standard；
Concentricity of the inner and outer cone：0.005mm；
Dynamic balance：G6.3/12000 and G2.5/20000rpm.
SK NO taper shank is in conformity with AT3 standard；
Concentricity of the inner and outer cone：0.005mm；
Dynamic balance：G6.3/12000 and G2.5/20000rpm.
