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Another factor that could be contributing to the price increase is the raw material costs. The production of power tools requires a variety of materials, including metals and plastics. These materials can be expensive, and any increase in their prices will inevitably be passed on to consumers in the form of higher product prices. In recent months, there have been reports of shortages in some raw materials, which could be another reason for the price increase.

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The advent of high-strength, low-alloy (HSLA) steels brought about a significant leap in performance. These alloys offered improved resistance to corrosion, higher yield strength, and better toughness, allowing drill rods to withstand the rigors of deep drilling without failing. Furthermore, heat treatment processes were refined to give the steel additional hardness while retaining its flexibility, ensuring that the rods could bend without breaking as they navigated through twists and turns in the mine shaft.

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