1 in x 39 in SDS Plus Rotary Hammer Drill Bit - Heavy Duty Masonry

In this review the 1 in x 39 in SDS Plus rotary hammer drill bit is assessed for contractors, tradespeople and serious DIYers who need a long masonry bit for deep holes in concrete, brick and cement. The single biggest reason to buy is the combination of a 1 in cutting diameter and a full 39 in length, which lets users reach deep cores and anchor points without switching to awkward extensions. The review notes solid build quality and fast drilling speed, while also reporting a rare shaft bending issue observed by one customer.

Key Features

• 1 in cutting diameter: Provides a large, clean hole suitable for heavy anchors and through-holes in concrete and brick.
• 39 in total length: Reaches deep drilling positions so users can bore through thick walls or set long fasteners without extensions.
• SDS Plus shank: Ensures a secure fit in compatible rotary hammers and quick bit changes on job sites.
• Steel body with carbide tip: Combines toughness and a hard cutting edge for sustained performance in abrasive masonry.
• Fast drilling speed: Customers report quick penetration through concrete, reducing time spent on each hole.
• Versatile in masonry: Works in concrete, brick, cement and stone for a range of common construction tasks.

Who It's For

The 1 in x 39 in SDS Plus bit is aimed at professional tradespeople and experienced DIYers who frequently drill deep holes for anchors, through-bolts or conduit in concrete and large masonry structures. Its length and diameter make it particularly useful for heavy-duty anchoring and situations where access is limited and a long reach is required.

Those who should look elsewhere include users with only light occasional drilling needs or owners of small rotary drills without an SDS Plus chuck; a shorter or smaller diameter masonry bit would be more practical and less costly for infrequent jobs.

Pros & Cons

Pros

• Large 1 in diameter makes clean, generous holes for heavy anchors and through-fittings.
• Extraordinary 39 in length removes the need for multiple extensions in many deep-drilling jobs.
• Carbide tip and steel construction deliver reliable cutting and longevity in tough masonry.
• SDS Plus shank offers a firm connection and easy changes on compatible rotary hammers.

Cons

• One reported case of the SDS Plus shaft bending suggests heavy side loads or improper use can damage the shank.
• Size and length make it overkill for light domestic tasks and demand a compatible heavy-duty hammer drill.

Specifications

Cutting Diameter	1 in (25 mm)
Total Length	39 in (1000 mm)
Shank Type	SDS Plus
Material	Steel body with carbide tip
Primary Applications	Concrete, brick, cement, stone
Brand	GRIXLEN

Our Verdict

The 1 in x 39 in SDS Plus rotary hammer drill bit is a sensible purchase for professionals and seasoned DIYers who need a deep, large-diameter masonry bit. It delivers strong cutting performance, fast drilling in concrete and a secure SDS Plus fit, representing good value for heavy-duty applications; buyers should, however, ensure proper use and a compatible rotary hammer to avoid shank stress.

Frequently Asked Questions

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

What materials can it drill?
Designed for masonry: concrete, brick, cement and stone are all suitable materials for this bit.

Is the tip durable?
The carbide tip is made for abrasive masonry and offers improved longevity compared with plain steel cutting edges.