1-1/2 x 16 x 21 in SDS Max Rotary Hammer Drill Bit - Heavy Duty

Our review of this 38mm (1-1/2 in) SDS Max rotary hammer drill bit finds it best suited for tradespeople and serious DIYers who regularly drill deep holes in masonry. The single biggest reason to buy is its long 540mm (21 in) total length combined with a 406mm (16 in) drilling depth, which lets users reach through thick concrete or block walls without changing bits. The review focuses on real-world performance: the alloy steel body with a + type carbide tip delivers consistent cutting in masonry, brick, stone and cement walls, though some users note mixed impressions on tip durability under extreme use.

Key Features

• 38mm diameter: A large 1-1/2 in cutting diameter makes this bit ideal for heavy anchor bolts and through-holes in concrete.
• 540mm total length: The 21 in overall length gives extra reach for deep installations and reduces the need for extensions.
• 406mm drilling depth: With 16 in workable depth you can bore thick walls and cores without multiple passes.
• SDS Max shank: The SDS Max shank ensures secure connection to compatible rotary hammers and efficient hammer action transfer.
• Alloy steel with carbide tip: The combination balances toughness in the shaft and cutting performance at the tip for masonry materials.
• Multi-material use: Designed for masonry, brick, stone and concrete, the bit performs consistently across common jobsite substrates.

Who It's For

This drill bit is aimed at professional builders, concrete contractors and experienced renovators who need a reliable large-diameter bit for through-holes, anchor installations and deep cores in masonry. The long length and SDS Max fit make it a practical choice for heavy-duty rotary hammers used on jobsites.

Hobbyists who only do occasional light drilling or who lack an SDS Max rotary hammer should look elsewhere, since the bit requires compatible equipment and is sized for more demanding tasks rather than occasional small holes.

Pros & Cons

Pros

• Large 38mm diameter handles heavy anchors and large-through holes without forcing multiple passes.
• Long 540mm length and 406mm drilling depth reduce the need for extensions and reach deep work areas.
• SDS Max shank provides secure tool engagement and efficient hammering for faster drilling in concrete.
• Carbide tip improves cutting performance in masonry and stone compared with plain steel tips.

Cons

• Some customers report mixed feedback on tip longevity under very abrasive conditions, so extreme heavy use may require replacement over time.
• The bit requires an SDS Max rotary hammer, which limits use to suitable power tools.

Specifications

Our Verdict

The 38mm SDS Max rotary hammer bit is a practical choice for professionals who need a deep, large-diameter masonry bit that holds up to routine jobsite demands. It offers excellent reach and efficient drilling thanks to the SDS Max shank and carbide tip, delivering good value for contractors and serious DIYers, though those seeking extreme tip longevity under constant abrasive loads should be aware replacement may be needed eventually.

Frequently Asked Questions

Will this bit fit my hammer?
It fits rotary hammers with an SDS Max chuck; confirm your tool accepts SDS Max shanks before purchasing.

What materials can it drill?
It is designed for masonry, brick, stone and concrete including cement walls.

How deep can I drill?
The bit provides a drilling depth of 406mm (16 in) with a total length of 540mm (21 in) for extended reach.