Kyle Dunkley

Over the past few years, I’ve used a Bosch SDS-Plus Bulldog Xtreme (11255VSR) rotary hammer to bore a thousand 3/16-inch to 1-inch holes in everything from 30-day to 30-year concrete. I’ve tossed the tool around in my truck and on site and exposed it to endless Pacific Northwest rains. Although it isn’t the fastest model on the market, it has been a steady workhorse.

Last January Bosch introduced the SDS-Plus Bulldog Xtreme Max (RH228VC) rotary hammer, which is billed as a step up from the Xtreme. I recently poured a foundation that involved pinning some of the footings to bedrock with rebar dowels and drilling holes for anchoring the mudsills. The job gave me a chance to test-drive the Xtreme Max and...

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