Drill bit Smart SDS-plus Duo 20 x 1000/950 mm

SDS-plus drill bit Smart Duo, diameter 20 mm, overall length 1000 mm with a working length of 950 mm. Designed for rotary and rotary‑percussive drilling in concrete, masonry and natural stone using hammer drills with an SDS‑plus chuck. The Duo construction combines a reinforced shaft and an optimized flute profile to provide increased strength and effective removal of drilling debris during through‑drilling and installation tasks.

Advantages

The Duo design improves resistance to bending and breakage while maintaining efficient concrete dust evacuation thanks to its specially shaped flutes. The long working length allows reaching deeper anchor points and passing completely through thick sections without changing tools. Compatibility with SDS‑plus systems ensures quick, secure bit changes and stable operation in standard hammer drills.

Suitable for

• Rotary and rotary‑percussive drilling in reinforced and non‑reinforced concrete
• Drilling through masonry blocks and natural stone
• Installation of anchors, dowels and through‑bolts
• Renovation and construction tasks requiring deep or through holes

Key specifications

• Shank type: SDS‑plus compatible
• Diameter: 20 mm
• Overall length: 1000 mm
• Working length (effective drilling depth): 950 mm
• Construction: Duo reinforced shaft with optimized flute profile for debris removal
• Intended drilling modes: rotary and rotary‑percussive
• Typical materials: concrete, masonry, natural stone

How to use

Fit the bit into an SDS‑plus hammer drill and ensure it locks securely before starting. Select the rotary‑percussive mode for concrete and masonry; use rotary mode only for non‑masonry materials if applicable. Begin drilling at low speed to establish the starter hole, then increase speed and apply steady, moderate feed pressure. Periodically withdraw the bit slightly to clear dust and prevent clogging of the flute, especially when drilling full‑depth holes. Use appropriate pilot marking and dust extraction or personal protective equipment as required by the worksite.

Usage recommendations

For longer tool life and consistent performance, avoid excessive lateral force and overheating. When drilling deep or through holes, combine intermittent withdrawal with compatible dust extraction or vacuuming to improve debris removal and maintain drill efficiency.