Harbor Freight Tools


12.5 Amp 23 lb. SDS-MAX Type Demolition Hammer

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Power through masonry, concrete and mortar with this demolition hammer

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MILWAUKEE 5446-21 at $679 Save $379.01

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With an impact rate of 1900 BPM with 18 ft. lbs. of impact energy, this demolition hammer powers through concrete and mortar with ease. With industry-leading anti-vibration control this high powered demo hammer gets the job done without wearing you out.

  • Hard hitting 12.5 amp motor ensures powerful performance
  • Variable speed control dial matches speed to application
  • Impact rate of 1900 BPM with 18 ft. lbs. of impact energy
  • Adjustable 360° side handle for maximum comfort and control
  • Anti-vibration control
  • Accepts industry standard SDS Max-Type bits
  • Ergonomic handle with shock absorbent anti-vibration technology prevents strain and fatigue
  • Quick change bit retention
  • Ball bearing construction for longer tool life

Replacement Parts in Stock

Call to Order: 1-800-444-3353

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Important Information

  • Requires 20 amp, 120 volt circuit. Chisels sold separately.
  • This item is subject to a 20% restocking fee

We think you’ll enjoy these customer-made YouTube videos about our products. They’re independent, uncut and unsponsored. They may also contain some four-letter words that aren’t “tool” and other content that’s not appropriate for children. We hope these videos help inform your tool-buying decisions. And a note from the lawyers: Products should always be used in accordance with the owner’s manual.

63437, 63440
AC Volts
Accessories Included
auxiliary handle, wrench, chisel oil, replacement brushes and carrying case
Amperage (amps)
Product Weight
23 lb.
Shipping Weight
33.45 lb.
Wattage (watts)
Impact (BPM)
1900 BPM
Power cord (ft.)
10 ft.
Shank size
18 mm
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.