Dimensions (Inch)--- IC (Size)=.750 (3/4) Thickness=.250 (1/4) Radius=.047 (3/64) Hole=.312 Relief Angle= 0 Deg
M40E--- Universal multi-layered CVD Aluminum Oxide coated grade for use in a wide variety of stainless steel and steel materials. Used for rough to finish machining at medium to high speeds and feeds. Not usable in interrupted cuts
M50E--- Universal multi-layered CVD Aluminum Oxide coated is a tough and wear resistant grade for use in light to rough turning of alloyed and unalloyed steels at medium cutting speeds even under slightly unfavorable conditions.
MP4--- General purpose uncoated durable steel cutting grade. For use in alloy steels and stainless steels under extremely difficult conditions such as heavy interrupted cuts or very low speeds with large chip sections.