5/8 4 flute , M42 Square Single End, Center Cut, 5/8 Shank, 3/4 LOC x 2-7/8 OAL
5/8 4 flute , M42 Square Single End, CH.020, 5/8 Shank, 1-5/8 LOC x 3-3/4 OAL
5/8 4 flute , M42 Square Single End, CH.030, 5/8 Shank, 3/4 LOC x 2-7/8 OAL