Drill bit Dedra WXQ2557, diameter 2.5 cm, for concrete/brick/stone/aerated concrete, point angle 135° (1 pc)

Single Dedra WXQ2557 drill bit with a 2.5 cm diameter, designed for drilling into concrete, brick, stone and aerated concrete. The 135° point angle improves centring and reduces walking at drill start, making the bit suitable for hammer and rotary-percussion drills used in construction, repair and installation tasks. This single-piece variant is intended for users who need a robust masonry bit for occasional or targeted professional use.

Advantages

The 135° point angle provides precise centring and reduces skidding on hard surfaces, while the 2.5 cm diameter allows for medium-sized holes commonly required for anchors, sleeves and conduit passages. The bit is compatible with hammer and rotary-percussion drilling modes, enabling efficient penetration of dense materials such as concrete and natural stone. Supplied as one piece, the bit is easy to store and replace without the need for kits or additional components.

Suitable for

• Drilling holes for anchors and expansion bolts in concrete or brick
• Creating passages for electrical and plumbing conduits in masonry walls
• Preparing fixing points for fixtures and frames on stone or aerated concrete
• Repair and renovation tasks that require medium-diameter masonry holes

Key specifications

• Diameter: 2.5 cm
• Point angle: 135° for improved centring
• Compatible materials: concrete, brick, natural stone, aerated concrete
• Intended drill types: hammer drills and rotary-percussion drills
• Quantity: 1 piece

How to use

Mark the drilling location and secure the workpiece if possible. Select a hammer or rotary-percussion drill with the appropriate chuck and set the drill to masonry mode. Start drilling at low speed to establish a centre, then increase speed and apply steady pressure without forcing the bit. Periodically withdraw the bit to clear dust and debris, which improves cutting efficiency and reduces heat buildup. After reaching the required depth, retract the bit while the drill is running slowly to clear remaining dust, then inspect the hole for clean walls before inserting anchors or fittings.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses, hearing protection and dust mask when drilling masonry. For reinforced concrete, proceed with caution and avoid sustained high pressure; if rebar is encountered, stop and assess using suitable rebar-detecting tools. Match drill speed and feed pressure to the material hardness and allow the bit to do the cutting to extend lifespan.