＊OD-tolerance: 0 ～ -0.02 ＊R-tolerance: R≦3 +/-0.01, R＞3 +/-0.015 ＊Designed to machine high hardened materials. ＊Suitable for dry cutting and high speed cutting thanks to newly developed raw materials and new coating. ＊Excellent work piece finishes. ＊Designed for high precision milling operation. ＊Higher wearing resistance.