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4 Piece set. Fractional electricians set. 3 Flats on shank. Special Axial and Radial flute design increases work piece penetration. Dual flute construction drills clean accurate holes in thin materials, quickly and easily. Type 78-AG. Made in USA.
Includes sizes: 1/8 - 1/2, 3/16 - 7/8, and 7/8 - 1-1/8. Step thickness: #1, #4, #11.