SPEED TIGER ISE Carbide Square End Mill - Micro Grain Carbide End Mill for Alloy Steels/Hardened Steels - AlTiBN Coating - 4 Flute - Fractional, 1/2 in

Used it to cut a 1/2" keyway into a shaft 7" long. worked with great satisfaction

End mills usually have a flat spot where the end mill holder's set screw locks in place to avoid spin. This does not. The holder's set screw seems to hold it adequately for my needs but it was a surprise considering my previously wonderful experiences with Speed Tiger.This product is listed as 1.5" length of cut on the page. It is not. The package lists it correctly as .5". Update: It cuts rapidly not just through carbon fiber but also through acetal as fast as my mill can advance it.

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So far this end mill has worked great. perfect finish, plows through A6 tool steel with ease.

Used to make a brass casing trimmer