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Bosch PRO SDS max-4 Hammer Drill Bit Review: Built for heavy-duty concrete work

Bosch 1x PRO SDS max-4 Hammer Drill Bit (for Reinforced concrete, Concrete building block, Ø 35,00 mm, Professional Accessory Rotary Hammer Drill)
4.6
[Extended Durability]  Lasts up to 1.5× longer than SDS max-2 drill bits.
[Professional Grade]  Designed for construction and civil engineering durability and performance.
[Universal SDS-max Fit]  Fits all SDS max rotary hammer drills for easy tool compatibility.
[Concrete Drilling Power]  Optimized for drilling concrete and reinforced concrete with reliable results.
[Included Dimensions]  Bosch PRO SDS max-4 drill bit, 35 x 400 x 520 mm delivered.
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A power tool accessory for heavy-duty concrete drilling, offering extended service life, the Bosch PRO SDS max-4 Hammer Drill Bit. Tradespeople and site foremen can expect fewer tool changes and steadier progress on demanding cores. Is this durable SDS max bit the right addition to a professional kit?

⚡ At a Glance
  • Drilling Performance: Durable, designed for holes in concrete and reinforced concrete, with manufacturer-stated extended life
  • Best for: Construction workers and civil engineers needing reliable, repeatable concrete drilling on site
  • Not ideal for: Users who require multiple smaller diameters or non-SDS max drill systems

SDS max-4 bit intended for drilling reinforced concrete and concrete building blocks. Manufacturer claims up to 1.5x longer life compared with a Bosch SDS max-2 bit.


Longer service life - thanks to manufacturer-rated longevity

Manufacturer materials state up to 1.5x longer life than a Bosch SDS max-2 drill bit. Design and production intent focus on extended wear resistance for heavy-duty use.

Fewer replacements and less downtime on site for repetitive drilling tasks, improving daily productivity.

Reliable compatibility - with standard SDS max rotary hammer drills

Shank and mount match the SDS max specification, ensuring secure, tool-standard engagement. Scope notes fit for all SDS max rotary hammer drills.

Quick, secure fit into common site hammers allows rapid bit changes and keeps workflows moving.

Suited to large holes in concrete - with 35 mm diameter and long reach

Scope of delivery lists dimensions as 35 x 400 x 520 mm, indicating a 35 mm diameter with substantial length for deeper cores. Intended application covers reinforced concrete and concrete building blocks.

Suitable for anchor and sleeve holes in structural work, reducing the need for multiple passes with smaller bits.

✨ The 4 Key Reasons for Bosch PRO SDS max-4 Hammer Drill Bit
  1. 35 mm diameter – Creates a wide hole suitable for heavy-duty anchors and sleeves
  2. Long reach – Accesses deeper cores without frequent repositioning
  3. SDS max compatibility – Secure, standard fit with common rotary hammer drills
  4. Proven durability – User feedback cites consistent, long-term on-site performance
📋 Technical Details at a Glance
  • Category: Home Improvement, Power tool accessory
  • Brand: Bosch
  • Product type: PRO SDS max-4 Hammer Drill Bit
  • Diameter: 35 mm
  • Dimensions: 35 x 400 x 520 mm
❓ Frequently Asked Questions

Q: Is this bit compatible with my rotary hammer?

A: Fits all SDS max rotary hammer drills, so it will work with tools that accept SDS max shanks.

Q: What materials is the bit designed for?

A: Designed for drilling holes in concrete and reinforced concrete, including concrete building blocks used in residential and commercial construction.

Q: How long does the bit last compared with other Bosch bits?

A: The manufacturer states the bit lasts up to 1.5 times longer than a Bosch SDS max-2 drill bit.

🏆 Our Verdict

Ideal for professional tradespeople who need a durable, SDS max-compatible bit for reinforced concrete work. The clear selling point is the combination of a 35 mm diameter and manufacturer-rated extended lifespan, suited to heavy anchor and core drilling. Durability and standard compatibility make it a long-term addition to a site kit, improving reliability across repeated jobs.