Adapter SDS+ Dedra H1226 with 100 mm pilot drill bit

The Dedra H1226 SDS+ adapter with a 100 mm pilot drill bit is an accessory that converts an SDS+ rotary hammer to accept an extended pilot bit for guided starts and improved hole alignment. It is intended to provide stable positioning when initiating drilling in masonry, concrete, or other hard substrates, helping to maintain a straight drilling line over deeper entries.

Advantages

The adapter enables the use of a long 100 mm pilot drill bit while maintaining SDS+ tool compatibility, reducing bit wandering during the initial penetration. Its design offers a secure mechanical connection to standard SDS+ chucks and supports accurate depth control and repeatable hole placement. The extended pilot length improves guidance for subsequent larger-diameter drilling operations.

Suitable for

• Guided starts when drilling into concrete, brick, or masonry
• Tasks requiring accurate hole alignment for anchor or dowel installation
• Pre-drilling for larger core or hole-saw operations
• Renovation and construction work with repetitive hole positioning

Key specifications

• Shank type: SDS+ compatible adapter
• Pilot drill bit length: 100 mm
• Material compatibility: masonry, concrete and similar substrates
• Primary function: guided pilot drilling and improved hole alignment

How to use

Insert the SDS+ adapter into the rotary hammer’s chuck until it locks according to the tool manufacturer’s instructions. Ensure the adapter and pilot bit are clean and undamaged before use. Position the pilot bit tip at the intended drilling point, start the drill at low speed to establish the initial groove, then apply controlled pressure while increasing speed as appropriate for the material. Withdraw periodically to clear dust and reduce heat buildup when drilling deeper pilot holes.

Usage recommendations

Use appropriate personal protective equipment such as eye protection, dust mask and hearing protection. Match drill speed and hammer action to the substrate and avoid excessive axial force to prevent premature wear. Inspect the adapter and pilot bit for wear before each use and replace if damaged or excessively worn.