Drill bit Bosch Expert CYL-9 MultiConstruction Ø14 mm working length 150 mm

The Bosch Expert CYL-9 MultiConstruction drill bit Ø14 mm with a 150 mm working length is designed for drilling precise holes in mixed building materials. It is built for use with both rotary and hammer drilling modes and intended for concrete, masonry, brick and some types of natural stone. The shank and flute geometry provide stable chip removal and accurate guidance during deeper drilling tasks, making it suitable for professional and DIY applications that require a longer reach.

Advantages

The CYL-9 MultiConstruction design combines a wear-resistant carbide tip and optimized flute geometry to reduce breakouts and improve centring. A 150 mm working length increases reach without compromising rigidity, while the 14 mm diameter offers a common hole size for anchors and fixings. The bit is compatible with standard SDS-plus and cylindrical holders where applicable, and its construction delivers consistent cutting performance and extended service life under regular on-site conditions.

Suitable for

• Drilling anchor and fixing holes in concrete and reinforced concrete
• Creating passages for pipes and conduits in masonry and brick
• Installing frames, brackets and heavy fixtures requiring longer holes
• General mixed-material drilling tasks where a longer working length is necessary

Key specifications

• Diameter: 14 mm
• Working length: 150 mm
• Intended materials: concrete, masonry, brick, some natural stone
• Tip material: tungsten carbide (carbide tip)
• Flute design: optimized for chip removal during deep drilling
• Drilling modes: rotary and hammer compatible

How to use

Mount the drill bit securely in a compatible drill chuck or holder according to the tool manufacturer’s instructions. Select hammer mode for hard masonry and concrete, and rotary-only mode for softer materials or when using a drill without impact function. Start drilling at low speed to establish the hole, then increase speed and apply steady pressure without forcing the bit. Periodically withdraw the bit to clear dust and debris for effective chip evacuation and to maintain drilling accuracy over the full 150 mm working length.

Usage recommendations

Use appropriate personal protective equipment, including eye and hearing protection and dust extraction or a vacuum when drilling in concrete or masonry. For reinforced concrete, monitor bit wear and replace the bit when cutting performance decreases. Match drill speed and impact settings to the material and avoid excessive lateral force to prolong bit life and ensure precise hole diameter for anchors and fixings.