25/32 x 23.6 in SDS Max Rotary Hammer Drill Bit - Deep Masonry Drill

Our review examines the 25/32 x 23.6 in SDS Max rotary hammer drill bit and finds it best suited for professionals and serious DIYers who need a long, durable masonry bit for deep anchoring or through-holes in concrete, brick, and stone. The single biggest reason to buy is its 600mm length and 470mm effective drilling depth, which let users reach well beyond typical bit lengths without switching tools. In this review the tool's robust alloy steel body and carbide tip stand out for demanding jobs, while the SDS Max shank ensures secure engagement with compatible rotary hammers.

Key Features

• Length: The 600mm total length provides a 470mm drilling depth for deep holes in concrete and masonry without multiple extensions.
• Diameter: The 20mm (25/32 in) diameter delivers a common, versatile hole size for anchors and through-bolts in construction work.
• SDS Max shank: The SDS Max shank with an 18mm diameter offers secure connection to heavy-duty rotary hammers, reducing slippage during high-torque use.
• Carbide tip: The + type carbide tip improves cutting and wear resistance when drilling into abrasive materials like brick and stone.
• Alloy steel body: The alloy steel construction balances toughness and rigidity to resist bending on long, deep holes.
• Wide application: Designed for masonry, brick, stone and concrete, it covers most professional drilling needs on cement walls and structural materials.

Who It's For

This bit is ideal for masons, concrete contractors and experienced homeowners who regularly drill deep holes for anchors, rebar dowels, or through-holes in reinforced concrete and brick. The length and SDS Max interface suit heavy-duty rotary hammers and jobsite use where stability and reach matter.

It is less suitable for casual drilling with small rotary drills, or for users who only need shallow holes under 200mm; those users should choose shorter masonry bits or standard SDS Plus options that match their lighter tools.

Pros & Cons

Pros

• Long 600mm length with 470mm drilling depth reduces the need for extensions on deep work.
• SDS Max shank provides a secure connection for heavy rotary hammers and consistent power transfer.
• Alloy steel body and carbide tip offer durability for abrasive masonry and concrete tasks.
• 20mm diameter is a practical size for anchors and most structural fasteners.

Cons

• The heavy-duty design and SDS Max shank require a compatible hammer; it is not for light consumer drills.
• Customers report mixed feedback on tip strength, so extreme-duty contractors may prefer testing before bulk purchase.

Specifications

Size (Diameter)	20mm (25/32 in)
Total Length	600mm (23.6 in)
Drilling Depth	470mm (18.6 in)
Shank Type	SDS Max shank, shank dia 18mm (0.7 in)
Tip Material	+ type Carbide Tip
Body Material	Alloy Steel
Applications	Masonry, Brick, Stone, Concrete, cement wall

Our Verdict

The 25/32 x 23.6 in SDS Max rotary hammer drill bit is a sensible purchase for professionals and serious DIY users who need deep, reliable holes in concrete and masonry. Its long reach, sturdy alloy body and carbide tip give good value for heavy-duty jobs, provided the user has a compatible SDS Max rotary hammer and accepts that tip performance has had mixed feedback among customers.

Frequently Asked Questions

Will this bit fit my rotary hammer?
The bit uses an SDS Max shank with an 18mm diameter and requires an SDS Max compatible hammer for proper fit and performance.

How deep can I drill with this bit?
The total length is 600mm with an effective drilling depth of about 470mm, allowing deep holes without extensions.

Is the tip suitable for reinforced concrete?
The + type carbide tip and alloy steel body are designed for masonry and concrete; for highly reinforced sections, users should proceed with care and consider testing on scrap material.