Rotary Hammer Bit 5/8 in x 16 in x 18 in Pack of 3 - Durable Carbide

In this review the reviewer tested the Bosch Rotary Hammer Bit pack to see who should choose these bits and why. The bottom line: these 5/8 in bits are aimed at professionals and serious DIYers who need reliable holes in concrete and masonry, and the single biggest reason to buy is the Bosch-made carbide tip and hardening process that extend bit life under heavy loads. Installation and use with an SDS-Plus rotary hammer are straightforward, and the pack of three gives good value for repeated anchoring or through-hole work.

Key Features

• Bosch carbide tip: Bosch-made carbide tip is tougher and maintains cutting edges longer, reducing frequent replacements on hard material.
• Optimized brazing and hardening: The optimized brazing and hardening process delivers longer life so each bit drills more holes before showing wear.
• 4-flute design: Four flutes eject dust quickly and help maintain cutting speed during deep holes in concrete.
• Faster drilling: Tested to be about 15 percent faster than comparable S4L bits, which shortens job time for repetitive anchors.
• Pack size: Sold as a pack of three, providing backup bits for multi-anchor jobs or extended site use.

Who It's For

These bits are best for contractors, masons and advanced DIYers who regularly drill anchor holes or pass-through holes in concrete, block and stone and who use SDS-Plus rotary hammers. The toughness of the carbide tip and the hardening process mean they hold up under repeated heavy loads on jobsite materials.

Casual users who only drill occasional small holes in soft materials or those who need a wide range of sizes may want a mixed set instead. Also, users looking for bits explicitly marketed for very soft masonry or tile should consider purpose-specific bits for those materials.

Pros & Cons

Pros

• Excellent durability from the Bosch carbide tip and proprietary hardening process.
• Faster drilling speed compared with older S4L-style bits, saving time on repetitive holes.
• Good dust removal thanks to the 4-flute design, which helps keep the bit cutting efficiently.
• Pack of three offers value and convenience for multiple fixings or backup on site.

Cons

• Length opinions vary; some users may find the 16 in length limiting for very deep cores or unusually shallow needs.
• Sharpness reports are mixed, meaning some bits may require initial break-in or differ slightly by lot.

Specifications

Brand	BOSCH
Shank Type	SDS-Plus
Diameter	5/8 in
Cutting Length	16 in
Overall Length	18 in
Pack Quantity	3 bits
Tip Material	Bosch-made carbide tip

Our Verdict

These Bosch rotary hammer bits are a solid choice for pros and serious DIYers who need reliable, long-lasting performance when anchoring or drilling through concrete. The carbide tip and hardening process deliver real durability and faster drilling, and the three-pack offers practical value for most site needs.

Frequently Asked Questions

Will these fit my SDS-Plus rotary hammer?
Yes, the bits use an SDS-Plus shank and are designed for use with SDS-Plus rotary hammers.

Are they good for granite and boulders?
Customers report the carbide tip handles granite and boulder material well, offering easy drilling with only slight wear over time.

How many holes will one bit last?
Longevity varies with material and use, but the optimized brazing and hardening process is intended to produce more holes per bit than older designs.