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The ROBERT BOSCH TOOL GROUP HCBG21T is a carbide hammer drill bit engineered for demanding masonry applications. Part of the BluGranite Turbo series, this bit measures 5/8 inch in diameter with a 12-inch overall length and a 10-inch usable flute length. The hex shank design is impact-rated, allowing use in both hammer drill/drivers and impact drivers. A 4-grind head adds two extra cutting angles compared to standard masonry bits, contributing to faster penetration rates and extended service life. Bosch-made carbide construction is specified for durability under heavy, repetitive loads. This package contains 5 bits.
The HCBG21T is suited for drilling into brick, block, concrete, and general masonry in residential and light commercial settings. The multi-grind carbide centering tip promotes accurate bit starts, reducing walking on uneven or hard surfaces. Milled U-flutes with deep-cut spirals channel dust and debris out of the hole efficiently, helping maintain cutting speed throughout the bore. The impact-rated hex shank makes this bit a practical choice for tradespeople who carry impact drivers as part of their standard kit and need a masonry bit that works across multiple tool platforms without a separate adapter.
The HCBG21T hex shank is impact-rated for use in standard hammer drill/drivers and impact drivers. No specific tool model compatibility was provided by the manufacturer for this listing.
Installation of this bit is performed by masonry tradespeople, carpenters, and general contractors. Secure the hex shank fully into the tool chuck or bit holder before operation, and confirm the tool is set to hammer or rotary-hammer mode as appropriate for the application. Always wear eye protection and a dust mask when drilling into masonry materials. Depress the trigger only after the bit tip is positioned against the work surface to avoid skipping.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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