3/8" 4FL 4LOC 7OAL 3/8Shk SQ SC EM Uncoated GP

​General Purpose Square End 30 Degree Helix 10% micrograin carbide.
 
All tools hones to improve tool life.  For maximum flexibility, General Purpose tools are available Uncoated, TiN and TiALN Coated for added durability and performance.