Drill bit Dedra WB04075, diameter 4 mm, length 80 mm, for concrete/brick/stone/aerated concrete

Dedra WB04075 is a 4 mm diameter, 80 mm long masonry drill bit designed for drilling small-diameter holes in concrete, brick, natural stone and aerated concrete. Intended for use with rotary hammers or SDS-plus compatible tools, this single bit is suited to creating holes for anchors, dowels and cable routing where precision and a compact bore are required.

Advantages

The bit offers consistent diameter and a compact length that facilitates controlled drilling in masonry substrates. Its geometry is optimised for impact drilling, reducing walking at the start and maintaining a steady drilling speed through varied masonry materials. Supplied as a single piece, the bit is convenient for occasional masonry tasks and for keeping a minimal set of sizes on site.

Suitable for

• Drilling anchor and dowel holes in concrete and brick
• Making cable or conduit entry holes in masonry walls
• Installing fixtures into natural stone and aerated concrete
• Repair and maintenance tasks that require small-diameter masonry holes

Key specifications

• Diameter: 4 mm
• Overall length: 80 mm
• Material compatibility: concrete, brick, natural stone, aerated concrete
• Pack quantity: 1 piece

How to use

Select a suitable rotary hammer or SDS-plus compatible drill and secure the Dedra WB04075 bit in the tool chuck according to the tool manufacturer’s instructions. Mark the drilling point, start drilling at low speed to establish the hole without wandering, then increase to the recommended speed and apply steady pressure. Periodically withdraw the bit to clear debris and allow the bit and workpiece to cool. For deeper holes or dense concrete, use intermittent drilling and clearance to maintain performance.

Usage recommendations

Use appropriate personal protective equipment including safety glasses, hearing protection and a dust mask. Match drill speed and impact settings to the masonry type, and avoid excessive lateral force to prolong bit life. Store the bit dry and protected from impact when not in use.