A.I.D. Logo Associated Industrial Distributors
  • 800-351-4230
  • US Orders over $100 Ship Free!
  • 8am - 4:30pm Central Time - Monday through Friday
  • rivet rivet

    Cobalt Jobbers - Fractional Sizes

    a representational image of the JL-COBALT class
    Cobalt Jobbers contain a percentage of Cobalt in their steel, greatly increasing their wear resistance.
    shank size is the same as the diameter of the drill
    'COB' drill bits are made in the USA with M42 8% cobalt steel
    'IMPORT' drill bits are made with M35 5% cobalt steel
    Sets Also Available
    Part #
    Price
    COB.7mm
    • 0.03"
    • 1-3/8"
    $6.74
    COB.031
    • 1/32"
    • 1-3/8"
    $3.84
    COB.031_12_PACK
    • 1/32"
    • 1-3/8"
    12 per package $3.38 /ea
    $40.56
    COB.046
    • 3/64"
    • 1-3/4"
    $2.11
    COB.046_12_PACK
    • 3/64"
    • 1-3/4"
    12 per package $1.90 /ea
    $22.80
    COB.062
    • 1/16"
    • 1-7/8"
    $1.65
    COB.062_12_PACK
    • 1/16"
    • 1-7/8"
    12 per package $1.44 /ea
    $17.28
    COB.062_96_PIECES
    • 1/16"
    • 1-7/8"
    96 per package $1.30 /ea
    $124.80
    COB.062_IMPORT
    • 1/16"
    • 1-7/8"
    $1.25
    COB.078
    • 5/64"
    • 2"
    $1.65
    COB.078_12_PACK
    • 5/64"
    • 2"
    12 per package $1.44 /ea
    $17.28
    COB.078_IMPORT
    • 5/64"
    • 2"
    $1.25
    COB.093
    • 3/32"
    • 2-1/4"
    $1.65
    COB.093_12_PACK
    • 3/32"
    • 2-1/4"
    12 per package $1.44 /ea
    $17.28
    COB.093_IMPORT
    • 3/32"
    • 2-1/4"
    $1.25
    COB.109
    • 7/64"
    • 2-5/8"
    $1.73
    COB.109_12_PACK
    • 7/64"
    • 2-5/8"
    12 per package $1.46 /ea
    $17.52
    COB.109_IMPORT
    • 7/64"
    • 2-5/8"
    $1.36
    COB.125
    • 1/8"
    • 2-3/4"
    $2.14
    COB.125_12pcs
    • 1/8"
    • 2-3/4"
    12 per package $1.72 /ea
    $20.64
    COB.125_24pcs
    • 1/8"
    • 2-3/4"
    24 per package $1.54 /ea
    $36.96
    COB.125_IMPORT
    • 1/8"
    • 2-3/4"
    $1.64
    COB.140
    • 9/64"
    • 2-7/8"
    $2.14
    COB.140_12_PACK
    • 9/64"
    • 2-7/8"
    12 per package $1.85 /ea
    $22.20
    COB.140_IMPORT
    • 9/64"
    • 2-7/8"
    $1.64
    COB.156
    • 5/32"
    • 3-1/8"
    $2.35
    COB.156_12pcs
    • 5/32"
    • 3-1/8"
    12 per package $2.05 /ea
    $24.60
    COB.156_IMPORT
    • 5/32"
    • 3-1/8"
    $1.86
    COB.171
    • 11/64"
    • 3-1/4"
    $2.51
    COB.171_12_pcs
    • 11/64"
    • 3-1/4"
    12 per package $2.18 /ea
    $26.16
    COB.171_IMPORT
    • 11/64"
    • 3-1/4"
    $1.96
    COB.187
    • 3/16"
    • 3-1/2"
    $2.84
    COB.187_12pcs
    • 3/16"
    • 3-1/2"
    12 per package $2.45 /ea
    $29.40
    COB.187_IMPORT
    • 3/16"
    • 3-1/2"
    $2.19
    COB.203
    • 13/64"
    • 3-5/8"
    $3.38
    COB.203_12_PACK
    • 13/64"
    • 3-5/8"
    12 per package $2.95 /ea
    $35.40
    COB.203_IMPORT
    • 13/64"
    • 3-5/8"
    $2.63
    COB.218
    • 7/32"
    • 3-3/4"
    $3.71
    COB.218_12pcs
    • 7/32"
    • 3-3/4"
    12 per package $3.20 /ea
    $38.40
    COB.218_IMPORT
    • 7/32"
    • 3-3/4"
    $2.88
    COB.234
    • 15/64"
    • 3-7/8"
    $3.89
    COB.234_12pcs
    • 15/64"
    • 3-7/8"
    12 per package $3.38 /ea
    $40.56
    COB.234_IMPORT
    • 15/64"
    • 3-7/8"
    $3.11
    COB.234_IMPORT_12_PACK
    • 15/64"
    • 3-7/8"
    12 per package $2.63 /ea
    $31.56
    COB.250
    • 1/4"
    • 4"
    $4.21
    COB.250_108pcs
    • 1/4"
    • 4"
    108 per package $3.26 /ea
    $352.08
    COB.250_12pcs
    • 1/4"
    • 4"
    12 per package $3.62 /ea
    $43.44
    COB.250_IMPORT
    • 1/4"
    • 4"
    $3.28
    COB.250_IMPORT_108
    • 1/4"
    • 4"
    108 per package $2.62 /ea
    $282.96
    COB.250_IMPORT_12_PACK
    • 1/4"
    • 4"
    12 per package $2.78 /ea
    $33.36
    COB.265
    • 17/64"
    • 4-1/8"
    $5.61
    COB.265_IMPORT
    • 17/64"
    • 4-1/8"
    $3.71
    COB.281
    • 9/32"
    • 4-1/4"
    $5.85
    COB.281_6pcs
    • 9/32"
    • 4-1/4"
    6 per package $4.31 /ea
    $25.86
    COB.281_IMPORT
    • 9/32"
    • 4-1/4"
    $3.95
    COB.296
    • 19/64"
    • 4-3/8"
    $4.73
    COB.296_IMPORT
    • 19/64"
    • 4-3/8"
    $4.10
    COB.312
    • 5/16"
    • 4-1/2"
    $7.29
    COB.312_6pcs
    • 5/16"
    • 4-1/2"
    6 per package $5.60 /ea
    $33.60
    COB.312_IMPORT
    • 5/16"
    • 4-1/2"
    $5.05
    COB.328
    • 21/64"
    • 4-5/8"
    $8.83
    COB.328_IMPORT
    • 21/64"
    • 4-5/8"
    $5.61
    COB.343
    • 11/32"
    • 4-3/4"
    $9.17
    COB.343_IMPORT
    • 11/32"
    • 4-3/4"
    $6.13
    COB.359
    • 23/64"
    • 4-7/8"
    $10.44
    COB.359_IMPORT
    • 23/64"
    • 4-7/8"
    $7.04
    COB.375
    • 3/8"
    • 5"
    $10.93
    COB.375_6_PACK
    • 3/8"
    • 5"
    6 per package $7.83 /ea
    $46.98
    COB.375_IMPORT
    • 3/8"
    • 5"
    $7.04
    COB.390
    • 25/64"
    • 5-1/8"
    $11.45
    COB.390_IMPORT
    • 25/64"
    • 5-1/8"
    $7.97
    COB3.390
    • 25/64"
    • 5-1/8"
    low stock
    call to order
    COB.406
    • 13/32"
    • 5-1/4"
    $12.19
    COB.406_IMPORT
    • 13/32"
    • 5-1/4"
    $8.34
    COB3.406
    • 13/32"
    • 5-1/4"
    $12.19
    COB.421
    • 27/64"
    • 5-3/8"
    $12.90
    COB.421_IMPORT
    • 27/64"
    • 5-3/8"
    $9.20
    COB3.421
    • 27/64"
    • 5-3/8"
    $12.90
    COB.437
    • 7/16"
    • 5-1/2"
    $13.72
    COB.437_6_PACK
    • 7/16"
    • 5-1/2"
    6 per package $10.43 /ea
    $62.58
    COB.437_IMPORT
    • 7/16"
    • 5-1/2"
    $8.81
    COB3.437
    • 7/16"
    • 5-1/2"
    $13.72
    COB.453
    • 29/64"
    • 5-5/8"
    $16.07
    COB.453_IMPORT
    • 29/64"
    • 5-5/8"
    $11.33
    COB3.453
    • 29/64"
    • 5-5/8"
    $16.07
    COB.468
    • 15/32"
    • 5-3/4"
    $16.84
    COB.468_IMPORT
    • 15/32"
    • 5-3/4"
    $11.52
    COB3.468
    • 15/32"
    • 5-3/4"
    $16.84
    COB.484
    • 31/64"
    • 5-7/8"
    $17.25
    COB.484_IMPORT
    • 31/64"
    • 5-7/8"
    $11.85
    COB3.484
    • 31/64"
    • 5-7/8"
    $17.25
    COB.500
    • 1/2"
    • 6"
    $17.88
    COB.500_6_PACK
    • 1/2"
    • 6"
    6 per package $12.85 /ea
    $77.10
    COB.500_IMPORT
    • 1/2"
    • 6"
    $10.81
    COB3.500
    • 1/2"
    • 6"
    $17.88
    Generated in 0.041 seconds