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Milwaukee Drill Chuck Keys and Chuck Key Holders are handy items that should be a part of anyone's tool collection. If you've lost your chuck key, pick yourself up a quality replacement. And if you want to avoid losing it again, grab a chuck key holder and always have your key handy.

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Milwaukee 48-28-4011 Bit Extension 18"

  • Fits selfeed, auger bits , holes saws
  • Anything w/ 7/16" arbor
  • Hex female end
$27.50

Milwaukee 48-28-4016 24" x 7/16" Hex Shank Bit Extension

  • Fits selfeed, auger bits , holes saws
  • Anything w/ 7/16" arbor
$29.99

Milwaukee 48-66-0061 1/2" Square Female to 7/16" Hex Female Adapter

  • Heat Treat Process for Maximum Strength and Durability, Heavy Duty Construction
  • Adapts a 1/2" Square Drive to a 7/16" Hex Drive Quick Change adapter
$19.99

Milwaukee 48-66-3280 3/8" x 1/2" Replacement Chuck Key

3 Reviews
  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$9.69
2+ / $6.98
3+ / $6.28
4+ / $5.65

Milwaukee 48-66-3280 3/8" x 1/2" Replacement Chuck Key 2x

1 Review
  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$13.95

Milwaukee 48-66-3280 3x 3/8" x 1/2" Replacement Chuck Key 3x

  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$18.83

Milwaukee 48-66-3280 3/8" x 1/2" Replacement Chuck Key 4x

  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$22.60

Milwaukee 48-66-3280 5x 3/8" x 1/2" Replacement Chuck Key 5x

  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$26.56

Milwaukee 48-66-3280 6x 3/8" x 1/2" Replacement Chuck Key 6x

  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$30.60

Milwaukee 48-66-3280 3/8" x 1/2" Replacement Chuck Key 8x

  • For 3/8" & 1/2" chucks with 1/4" pilot
  • K32 Jacobs # 32BA, 33BA, 32, 32B, 33, 33B
  • 3326, 33KD, MC10, MC33, 32BB, 381, 11N, MC1D,
$39.17

Milwaukee 48-66-4020 Chuck Key Holder

1 Review
  • Fits Milwaukee keys # 48-66-3120, 48-66-3160
  • Made in the U.S.A
$6.88

Milwaukee 49-22-1550 #3 Morse Taper to 3/4" Chuck

  • Adapts a 3/4" capacity chuck to 1-1/4" drills with No. 3 Internal Morse Taper Socket
  • Compatible with Milwaukee Super Hole Shooter Drill 2404-1 as well as Milwaukee Electromagnetic Drill Press models 4208-1 and 4209-1
  • Allows you to use standard 3/4" shank drill bits with your Mag drill
$94.99
2+ / $94.50

Milwaukee 49-22-1550 #3 Morse Taper to 3/4" Chuck 2x

  • Adapts a 3/4" capacity chuck to 1-1/4" drills with No. 3 Internal Morse Taper Socket
  • Compatible with Milwaukee Super Hole Shooter Drill 2404-1 as well as Milwaukee Electromagnetic Drill Press models 4208-1 and 4209-1
  • Allows you to use standard 3/4" shank drill bits with your Mag drill
$179.00

Milwaukee 49-22-1560 1/4" Chuck Attachment 2x

  • Allows same flexibility in drilling and driving capabilities as a driver drill or corded drill with three jawed chuck
  • Standard equipment on 2.4V Cordless Screwdrivers 6540-1, 6547-1 and 6547-22
  • Designed for professional-grade durability; 3-jawed adjustable chuck
$46.50

Milwaukee 49-22-1560 1/4" Chuck Attachment 8x

  • Allows same flexibility in drilling and driving capabilities as a driver drill or corded drill with three jawed chuck
  • Standard equipment on 2.4V Cordless Screwdrivers 6540-1, 6547-1 and 6547-22
  • Designed for professional-grade durability; 3-jawed adjustable chuck
$169.00

Milwaukee 49-22-1560 1/4" Hex Universal Chuck Attachment

  • Allows same flexibility in drilling and driving capabilities as a driver drill or corded drill with three jawed chuck
  • Standard equipment on 2.4V Cordless Screwdrivers 6540-1, 6547-1 and 6547-22
  • Designed for professional-grade durability; 3-jawed adjustable chuck
$27.95
2+ / $25.00

Milwaukee 49-22-8510 Right Angle Attachment

2 Reviews
  • Ideal for: in between studs, cabinet installation, and automotive repair
  • Drives screws up to #8 x 3"
  • Fits into any 1/4" chuck or larger
$49.95
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