The Park Tool HMR-4 21oz Hammer, click to enlarge
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Item # HMR-4

/ Tools / General Shop Tools

21 oz. Shop Hammer

Our versatile and durable 21 ounce Shop Hammer is a perfectly balanced striking instrument built for a wide variety of shop uses.

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HMR-4 Features


  • Forged steel, precision machined striking face
  • Non marring, replaceable composite tip
  • Fiberglass shaft with soft touch grip
  • 21 oz. (590g) Head
  • Length: 13.5" (34.5cm)
  • Steel striking face: 1.4" (35mm) diameter
  • Plastic face: 1.7" (43mm) diameter
  • Replacement tip: Part #293

Parts & Accessories


Replacement Parts