5/8 4 flute , COB Square Single End, Non-Center Cutting, 5/8 Shank, 1-5/8 LOC x 3-7/8 OAL
5/8 4 flute , COB Square Single End, Non-Center Cutting, 5/8 Shank, 2-1/2 LOC x 4-5/8 OAL