Catalog 5 Pc . 10 Pc . Size Spec . Grit Order No . Price Ea . Price Ea . Price Ea .   3 X 1/4 HF13    HARD ARKANSAS Ultra Fine NOR86590 $ 13 . 02 $ 12 . 37 $ 11 . 72 3 X 3/8 HF33    HARD ARKANSAS Ultra Fine NOR86595 $ 13 . 93 $ 13 . 23 $ 12 . 53 3 X 1/2 HF43    HARD ARKANSAS Ultra Fine NOR86600 $ 18 . 08 $ 17 . 17 $ 16 . 27 4 X 1/4 CF14    INDIA Coarse NOR86075 $    5 . 35 $    5 . 08 $    4 . 81 4 X 1/4 MF14    INDIA Medium NOR86070 5 . 35 5 . 08 4 . 81 4 X 1/4 FF14    INDIA Fine NOR86065 5 . 35 5 . 08 4 . 81 4 X 3/8 MF34    INDIA Medium NOR86085 $    5 . 42 $    5 . 15 $    4 . 88 4 X 3/8 FF34    INDIA Fine NOR86080 5 . 42 5 . 15 4 . 88 4 X 1/2 MJF44    CRYSTOLON Medium NOR86045 $    5 . 46 $    5 . 19 $    4 . 92 4 X 1/2 FJF44    CRYSTOLON Fine NOR86040 5 . 46 5 . 19 4 . 92 4 X 1/2 CF44    INDIA Coarse NOR86105 5 . 46 5 . 19 4 . 92 4 X 1/2 MF44    INDIA Medium NOR86100 5 . 46 5 . 19 4 . 92 4 X 1/2 FF44    INDIA Fine NOR86095 5 . 46 5 . 19 4 . 92 6 X 1/2 CF46    INDIA Coarse NOR86120 $    8 . 53 $    8 . 10 $    7 . 68 6 X 1/2 MF46    INDIA Medium NOR86115 8 . 53 8 . 10 7 . 68 6 X 1/2 FF46    INDIA Fine NOR86110 8 . 53 8 . 10 7 . 68 6 X 3/4 MF66    INDIA Medium NOR86145 $    9 . 69 $    9 . 21 $    8 . 72 6 X 3/4 FF66    INDIA Fine NOR86140 9 . 31 8 . 84 8 . 38 6 X 1 CF76    INDIA Coarse NOR86165 $ 10 . 19 $    9 . 68 $    9 . 17 6 X 1 MF76    INDIA Medium NOR86160 10 . 19 9 . 68 9 . 17 6 X 1 FF76    INDIA Fine NOR86155 10 . 19 9 . 68 9 . 17 Square Abrasive Files 47 Square Abrasive Files Square File applications range from dimensioning keyways to maintain fit, stoning faces on router bits, touching - up edges of reamer teeth, and lapping/honing to close tolerances to produce the finest edge on precision instruments, die work and delicate tools . Triangular Abrasive Files Triangular Files are used for a variety of deburring, chamfering and radiusing applications including cleaning tap threads, stoning cutting surfaces of milling cutters, lapping honing tools, dies and molds, and putting precision points on center punches . The