Drill bit Bosch Expert HEX-9 Multi Construction Ø11 mm, hex shank

The Bosch Expert HEX-9 Multi Construction drill bit Ø11 mm is a purpose-built accessory for drilling tasks in mixed construction materials. With an 11 mm diameter and a HEX-9 hex shank, this drill bit is designed to deliver straight, reliable holes when used with compatible chucks and quick-change adapters. It is intended for use in renovation, assembly and general construction where a durable, secure connection between bit and tool is required.

Advantages

The hex shank improves torque transfer and reduces slippage in quick-change adapters and hex chucks, providing a stable connection during demanding drilling operations. The bit geometry and material selection are optimized for consistent cutting and wear resistance across a range of substrates commonly encountered on site. Its 11 mm diameter offers a balance between hole size and material removal speed for many fastening and installation tasks.

Suitable for

• Drilling through concrete, masonry and brick (light to medium density)
• Installation of anchors and fasteners
• Renovation and repair work in mixed-material structures
• General assembly tasks using quick-change chucks and hex adapters

Key specifications

• Diameter: 11 mm
• Shank type: HEX-9 hexagonal shank for quick-change systems
• Intended use: multi-construction drilling in various building materials
• Compatibility: designed for use with compatible drills, chucks and adapters that accept HEX-9 shanks
• Design focus: straight drilling performance and secure tool-bit connection

How to use

Fit the drill bit into a compatible hex chuck or quick-change adapter, ensuring the HEX-9 shank is fully seated and locked. Use the appropriate drill speed and percussion/rotary mode for the material: lower speed with percussion for masonry and moderate speed for softer materials. Apply steady, moderate pressure and withdraw periodically to clear dust and debris when drilling deeper holes. Always follow the drilling machine manufacturer's guidance for clamping and operating speeds to maintain straight, accurate holes.

Recommendations

Wear appropriate personal protective equipment including eye protection and dust mask when drilling. Inspect the bit for wear or damage before use and replace if the tip or shank shows deformation. Match drill mode and speed to the work material and allow cooling pauses during extended use to prolong bit life.