Drill bit Dedra WPQ2041 — 20 mm diameter, 135° point, for concrete/brick/stone/aerated concrete

Dedra WPQ2041 — 20 mm diameter, 135° point, for concrete/brick/stone/aerated concrete is a single masonry drill bit designed for use with rotary and hammer drills. The 20 mm cutting diameter and 135° tip provide stable centring and reduced walking when starting holes in concrete, brick, natural stone and aerated concrete. Supplied as one piece, this drill bit is intended for creating anchor holes, through-holes and fixture openings in masonry substrates.

Advantages

The 135° point angle improves centring and reduces lateral slippage at drill start, which helps achieve accurate hole placement. A robust cutting head and flute geometry are optimized for efficient dust removal and stable drilling in dense materials. The single-piece supply allows quick replacement or use as a dedicated bit for specific hole diameters without additional components.

Suitable for

• Drilling anchor holes in concrete and brick
• Creating through-holes for anchors and fasteners
• Work on natural stone and masonry fixtures
• Drilling in aerated concrete and lightweight blocks

Key specifications

• Cutting diameter: 20 mm
• Tip angle: 135° for improved centring
• Intended materials: concrete, brick, natural stone, aerated concrete
• Pack quantity: 1 piece

How to use

Fit the drill bit securely into the drill chuck and select the appropriate drilling mode (rotary-hammer or hammer) depending on the substrate. Mark the drilling point and start at low speed to ensure the 135° tip centres correctly, then increase speed and apply steady pressure. Withdraw the bit periodically to clear dust from the hole. For through-holes, drill completely through the material while maintaining alignment. After use, clean the flutes and store the bit in a dry place.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and dust mask when drilling masonry. Match drill mode and power to the material: use hammer mode for concrete and hard brick, and rotary mode for softer stone or aerated concrete when less impact is required. Allow the bit to cool during extended drilling to maintain cutting performance.