
I used this drill bit to drill through a 4" thick concrete slab with a pergola to attach a 6" x 6" anchor post for a pergola. It's a beast! Highly recommended. Drilled 16 holes in 4" rebar concrete and it went like a hot knife through butter with no sign of wear.

Bit and socket set BOSCH Promoline (2.607.017.322), 26 pcs.
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MICHELIN Latitude Sport 3 235/60 R18 103W summer
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