So Bosch now offers not just one but two different masonry bit designs: Bulldog bits, designed for fast drilling through light-to-normal weight concrete, and now also a tougher line targeted for use in “reinforced concrete or harsh aggregate.” They call it the Bulldog Xtreme.
Cheesy X-name aside, this bit sounds like it has some design pedegree. For example, the new bit features a solid-head carbide design, which Bosch claims helps it drill more quickly through nasty stuff (like rebar) while wearing down less at the same time as compared to other carbide-tipped bits. And Bosch utilizes a variety of manufacturing technologies to make the Xtreme, too, including a “proprietary diffusion-bonding technology” and a “high-heat, high-pressure solid state welding process” to keep the bits’ carbide and steel in one piece.
Also of interest: a bit shape design that incorporates a conical tip into the flutes in a way that Bosch suggests produces rounder holes — the better for setting anchors or fasteners.
I know. All this jargon gets boring fast (pun intended). But hey — if the bit actually works better, it really does make a difference to those who drill more than one or two holes at a time, which includes the majority of masonry pros. We haven’t tried ’em out yet, but we look forward to giving them a go.
Look for these on shelves soon, in sizes from 3/16″ to 1-1/8″.