Drill bit Dedra WPQ2246 — 22 mm diameter, 135° point angle, for concrete/brick/stone/aerated concrete

Dedra WPQ2246 drill bit, 22 mm diameter with a 135° point angle, is designed for efficient drilling in concrete, brick, stone and aerated concrete. The carbide-tipped geometry and robust shank ensure stable engagement with masonry surfaces and effective removal of dust during hammer and rotary-percussion drilling. This single piece is intended for use in construction and installation tasks where reliable hole quality and drilling stability are required.

Advantages

The carbide tip and optimized 135° point angle provide precise centring and prolonged cutting performance in hard and porous masonry. A sturdy shank design improves tool stability and reduces walking at the start of drilling, while flute geometry assists in rapid dust evacuation to maintain drilling speed. The bit is compatible with hammer and rotary-percussion drills commonly used on construction sites and for installation work.

Suitable for

• Drilling anchor and fixing holes in concrete and brick
• Creating passages for pipes and conduits in masonry walls
• Installing fixtures in aerated concrete blocks and stone
• General construction and renovation drilling where a 22 mm hole is required

Key specifications

• Diameter: 22 mm
• Point angle: 135°
• Tip material: carbide-tipped cutting geometry
• Material compatibility: concrete, brick, natural stone, aerated concrete
• Intended drill types: hammer drills and rotary-percussion drills
• Quantity: 1 piece

How to use

Secure the Dedra WPQ2246 in the drill chuck following the drill manufacturer's instructions. Select hammer mode for hard concrete and rotary-percussion or rotation-only for softer masonry depending on the base material. Begin drilling at low speed to create a precise starting point, then increase speed and apply steady moderate pressure. Periodically withdraw the bit to clear dust and allow the flute to evacuate debris, which helps maintain drilling efficiency and prevents overheating. Use appropriate personal protective equipment, including eye protection, hearing protection and a dust mask when working with masonry.

Usage recommendations

For best results, match drill speed and hammer setting to the material: lower speeds and hammer action for dense concrete, higher speed for softer materials like aerated concrete. Replace the bit when cutting performance declines or the tip shows visible wear; using a worn carbide tip reduces hole quality and increases stress on the drill. Clean and inspect the bit after use and store it in a dry place to prevent damage.