Modulus Arms Extreme Solid American Carbide, "ZrN" Coater End Mill.
**End Mill Only (thermal fit tool holder not included)**
5/16" Diameter, 3 Flute, .250" LOC, 5/16" Shank, 2.00" OAL, "ZrN" Coated
Significant Upgraded compatible end mill specifically designed for Modulus Arms Extreme Lower Receiver Jig. We have designed this end mill with high performance geometry, American carbide and "ZrN" coating. This High Performance end mill and AGT's introductory price is a "no brainer" This end mill is "ZrN' coated which gives this tool hardness and lubricity "like no other".