Diablo 1/4" x 16" x 18" SDS-Plus 2-Cutter Carbide-Tipped Hammer Drill Bit is engineered for professionals who demand fast, accurate holes in concrete and masonry. Diablo's Dura-Carbide construction and precision Peak Point Tip design deliver one of the fastest, longest-lasting drilling solutions available for rotary hammer applications - making this bit a reliable choice whether you're setting anchors in poured concrete or drilling through brick and block.

Key Features

• Diablo Dura-Carbide construction - withstands high-impact and high-heat drilling conditions, dramatically extending service life compared to standard hammer drill bits so you replace bits less often and stay productive longer.
• Peak Point Tip design - enables aggressive starts with minimal walking, producing clean, fast holes sized correctly for common anchors right from the first contact.
• Optimized brazing and hardening process on carbide tips - increases tip bonding strength and longevity, translating to consistent cutting performance across a larger number of holes.
• Optimized four-flute design - evacuates concrete dust faster than conventional fluting, keeping carbide tips cooler under load for ultimate strength and long-term durability in demanding concrete drilling tasks.
• SDS-Plus shank - fits corded and cordless SDS-Plus rotary hammer drills, giving you flexibility across your tool lineup without adapters or modifications.
• 16" working length with 18" overall length - provides reach for deep anchor holes in thick concrete slabs or masonry walls while keeping the bit manageable in your tool.
• 1/4" diameter - matches common anchor and fastener sizing so you get properly fitted holes without overdriving or guesswork.
• Made in Germany - reflects precision manufacturing standards that contribute to the tight tolerances and consistent carbide quality of each bit.

Why This Product

• For concrete anchor installation, the Peak Point Tip starts aggressively without skating across the surface, producing clean holes that seat anchors correctly - reducing rework and saving time on the job.
• The four-flute dust evacuation system keeps the tip cooler during extended drilling sessions, protecting the carbide edge and helping you drill more holes per bit compared to slower-clearing two-flute alternatives.
• Compatibility with both corded and cordless SDS-Plus rotary hammers means this bit integrates seamlessly into existing tool setups without requiring additional hardware or special adapters.
• At 18" overall with a 16" working length, this bit handles deep-reach applications in thick concrete or masonry where shorter bits simply cannot reach - a practical advantage for structural anchor work and through-wall drilling in brick and block.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAPL2170
• Diameter: 1/4"
• Overall Length: 18"
• Working Length: 16"
• Shank: SDS Plus
• Head Type: Carbide-Tipped
• Number of Cutters: 2
• Compatible Tools: SDS-Plus Rotary Hammer Drill
• Compatible Materials: Concrete; Brick/Block
• Pack Quantity: 1
• Country of Origin: Germany

Approved Applications

• Drilling concrete

Frequently Asked Questions

What rotary hammer tools is this bit compatible with?

This bit is designed for SDS-Plus rotary hammer drills and is optimized for maximum performance in both corded and cordless SDS-Plus rotary hammer models.

What materials can this drill bit be used on?

This bit is rated for use in concrete and brick/block applications. The Dura-Carbide tips and Peak Point Tip design are specifically built to handle the hardness and abrasiveness of these masonry materials.

What is the difference between the overall length and the working length on this bit?

The overall length of this bit is 18", which includes the SDS-Plus shank that seats into the tool. The working length - the portion that actually penetrates the material - is 16". This gives you up to 16" of usable drilling depth for deep anchor or through-wall holes.

How does the four-flute design benefit performance compared to a standard hammer drill bit?

The optimized four-flute design removes concrete dust from the hole faster than conventional designs, which keeps the carbide tips cooler during drilling. Cooler tips retain their hardness longer, resulting in greater durability and more holes drilled per bit before replacement.