The DeWALT 3/16 in. x 4-1/2 in. x 6-1/2 in. SDS Plus 2 Cutter Drill Bit - 25-Pack (DW5403B25) is a carbide-tipped masonry and concrete drilling solution engineered for professionals who demand consistent, clean, and reliable results in rock, concrete, and natural stone. Built with a tapered core and a two-stage variable helix flute, these SDS-Plus bits are designed to drill true, round holes that support secure anchor installation - even under the demanding conditions of deep-hole drilling. This bulk 25-pack keeps job sites stocked and downtime low, making it the practical choice for high-volume masonry work.

Key Features

• Strong Tapered Core - Provides maximum bit strength and durability, especially when drilling deep holes, reducing the risk of flute breaks that interrupt workflow and waste material.
• Two-Stage Flute Design with Variable Helix Pattern - Aggressively moves debris away from the contact zone for faster, more efficient drilling through concrete and masonry without clogging.
• Two Sharp Carbide Cutting Edges - Deliver clean, round holes for secure anchor installation, reducing the need for touch-ups or oversize anchor corrections.
• Wear Mark Indicator - Gives the user a clear, accurate visual reference for hole diameter so you know the bit is still performing within spec before the next anchor goes in.
• No Break Guarantee - If the bit fails for any reason while the wear mark is still visible, DeWALT will replace it, giving buyers confidence that each bit in this 25-pack is backed by a real performance commitment.
• SDS-Plus Chuck Compatibility - Fits standard SDS-Plus rotary hammer tools, allowing fast bit changes and secure chuck engagement without additional adapters.
• Carbide-Tipped Material - Resists wear against abrasive masonry, concrete, and natural stone surfaces for a longer usable life per bit compared to standard steel options.

Why This Product

• Bulk value with guaranteed performance - The 25-pack format keeps crews supplied across large concrete and masonry projects, and the included No Break Guarantee means any bit that fails while the wear mark is visible gets replaced - so you are not absorbing the cost of premature bit failure.
• Engineered for anchor-ready holes - Two sharp carbide cutting edges produce clean, round holes rather than ragged openings, which directly supports secure and properly seated anchor installation in concrete, masonry, and natural stone.
• Deep-hole drilling confidence - The tapered core is specifically designed to resist flute breaks when drilling deep holes, a common failure point with lesser bits, making these suitable for demanding structural and anchor applications.
• Efficient material removal keeps drilling fast - The variable helix two-stage flute design actively clears debris from the cutting zone, reducing heat buildup and maintaining drilling speed through dense concrete and masonry without repeated bit withdrawal.

Specifications

• Brand: DeWALT
• Model Number: DW5403B25
• Product Type: Concrete Bit
• Bit Type: Masonry
• Chuck Type: SDS-Plus
• Bit Size: 3/16 in. x 4-1/2 in. x 6-1/2 in.
• Diameter: 3/16 in.
• Overall Length: 6-1/2 in.
• Primary Material: Carbide Tipped
• Number of Cutting Edges: 2
• Quantity: 25-Pack
• Weight: 0.088 lb.
• Recommended Safety Equipment: Safety glasses
• Warranty: MWC
• Country of Origin: Germany

Approved Applications

• Concrete drilling for anchor installation
• Masonry drilling
• Natural stone drilling
• Deep-hole drilling with SDS-Plus rotary hammer tools

What's Included

• 25x SDS-Plus 2 Cutter Drill Bits (3/16 in. x 4-1/2 in. x 6-1/2 in.)

Frequently Asked Questions

What tools are compatible with the DW5403B25 drill bits?

These bits are designed for use with SDS-Plus rotary hammer tools. The SDS-Plus chuck system allows for quick bit changes and secure engagement without requiring additional adapters or accessories.

What does the No Break Guarantee cover?

DeWALT's No Break Guarantee means that if a bit fails for any reason while the wear mark indicator is still visible, DeWALT will replace the bit. Note that this guarantee excludes models DW5400, DW5401, and DW5401B25 - but it does apply to the DW5403B25.

What is the wear mark indicator and why does it matter?

The wear mark indicator is a reference point on the bit that shows the accurate drilling diameter is still intact. When the wear mark is visible, the bit is still performing within spec and remains eligible for the No Break Guarantee. It helps users avoid installing anchors with undersized or out-of-round holes caused by a worn bit.

What materials can the DW5403B25 drill through?

These carbide-tipped masonry bits are designed for drilling into concrete, masonry, and natural stone. They are percussion rated for use with SDS-Plus rotary hammer tools and are not rated for standard impact driver or drill use.