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What's Included

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Product Details


  • Jobsite versatility: Lets you use A taper bits with your spline drive rotary hammer
  • Affordability and flexibility: Make the most of your current rotary hammer
  • Long life: All-metal adapter withstands heavy daily use


Style Adapter
Tool Shank Spline
Bit Shank A-Taper


The Milwaukee® A Taper Bit Adapter lets you use A taper bits in your spline drive rotary hammer for greater productivity. Get more out of your spline drive rotary hammer, including models 5318-21, 5319-21, 5321-21, 5321-22 and 5345-21, with this heavy-duty, all-metal A taper bit adapter. Includes a drift pin (48-86-0120).

Model Options

Item/Cat # Style Tool Shank Bit Shank  
48-66-6503 Adapter Spline B-Taper
48-66-6502 Adapter Spline A-Taper
48-66-1370 Adapter SDS-PLUS Hammer Drill (straight)

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