SDS Max Rotary Hammer Drill Bit 380mm x 42mm - Heavy Duty Masonry

In this review the SDS Max Rotary Hammer Drill Bit is evaluated for contractors and serious DIYers who need a long, large-diameter bit for concrete and masonry. The bottom line: its 380mm total length and 42mm cutting diameter make it a practical choice when deep, large holes in brick, stone or cement walls are required, and the alloy steel body with a + type carbide tip is the single biggest reason to consider it for demanding masonry work.

Key Features

• Size and reach: The 380mm (15 in) total length lets users drill deeper cores through thick walls and blocks without changing tools.
• Large diameter: The 42mm (1-2/3 in) cutting diameter is suited to anchoring, through-holes and heavy-duty fixings where smaller bits would not suffice.
• SDS Max shank: The SDS Max shank handle provides secure retention and compatibility with rotary hammer tools that accept large shanks for sustained impact work.
• Material construction: Alloy steel body combined with a + type carbide tip balances toughness with cutting performance on stone, brick and concrete surfaces.
• Masonry applications: Designed specifically for masonry, brick, stone and concrete, it performs well on cement walls and similar substrates.

Who It's For

The bit is aimed at professional tradespeople, masons and serious renovators who regularly drill large holes in concrete, brick or stone and need a full-length bit with SDS Max compatibility. Its long reach and wide diameter fit tasks like heavy anchoring, through-bolt holes and installations that require a single pass through thick material.

Hobbyists with infrequent light work, or anyone using rotary hammers that only accept smaller shanks, should consider smaller diameter or shorter bits instead. This bit is not intended for delicate materials or precision carpentry where a smaller, non-impact drill bit is more appropriate.

Pros & Cons

Pros

• Large 42mm diameter and 380mm length let users drill deep, wide holes without switching tools.
• SDS Max shank ensures strong retention and reliable fit in compatible rotary hammers under heavy impact.
• Alloy steel body with a + type carbide tip provides durability and improved cutting on hard masonry surfaces.

Cons

• Customers report mixed feedback on tip strength, so extreme, repeated use on very abrasive aggregate may reduce tip life compared with some premium-grade tips.
• The size and SDS Max shank limit use to heavier rotary hammers; it is not suitable for compact drills.

Specifications

Product Type	Rotary hammer masonry drill bit
Diameter	42mm (1-2/3 in)
Total Length	380mm (15 in)
Shank Type	SDS Max shank handle
Material	Alloy steel body with + type carbide tip
Applications	Masonry, brick, stone, concrete, cement wall

Our Verdict

The SDS Max Rotary Hammer Drill Bit is a sensible choice for professionals who need a long, wide bit for heavy masonry work; its combination of length, 42mm diameter and SDS Max shank offers practical value for anchoring and through-hole drilling. While tip strength received mixed customer comments, the alloy steel body and carbide tip should deliver solid performance for typical construction duties.

Frequently Asked Questions

Will this fit my hammer drill?
This bit requires a rotary hammer that accepts an SDS Max shank; it will not fit drills designed for smaller shank types.

Is it suitable for reinforced concrete?
It is intended for masonry and concrete; however, drilling through heavy rebar can stress the tip, so avoid repeated contact with reinforcement where possible.

What is the best use case?
Best for deep, large-diameter holes in brick, stone and cement walls such as anchor and through-bolt installations.