Drill Bit Extension 450 mm Dedra DED1500-45 with SDS+ Shank

The Drill Bit Extension 450 mm Dedra DED1500-45 with SDS+ shank is an accessory designed to increase the working length of diamond and core drill bits used with rotary hammer drills that feature an SDS+ chuck. With a 450 mm overall length and an SDS+ connection, this extension enables drilling deeper holes or reaching confined or recessed drilling positions without changing the drill body or using longer drill bits. It is intended for use in masonry and concrete where additional reach is required for installation or repair tasks.

Advantages

This extension provides a stable and secure SDS+ connection for reliable torque transfer from the rotary hammer to the core bit. By adding 450 mm of extension length, it reduces the need to handle longer drill bits directly and allows access to hard-to-reach drilling points. The straightforward mechanical design keeps compatibility with standard SDS+ rotary hammers and preserves the rotational and hammering action necessary for effective core drilling in masonry and concrete.

Suitable for

• Extending diamond core bits for deeper masonry and concrete holes
• Drilling in confined or recessed areas where standard bit length is insufficient
• Renovation and construction tasks requiring extended reach for anchors, pipes or conduits
• Situations where using a rotary hammer with an SDS+ chuck is required

Key specifications

• Overall extension length: 450 mm
• Shank type: SDS+ compatible
• Intended use: extension for diamond and core drilling crowns
• Compatible with: rotary hammer drills fitted with SDS+ chucks
• Typical materials: masonry, concrete and similar construction substrates

How to use

Attach the SDS+ shank of the extension into the chuck of a compatible rotary hammer until it locks securely, then mount the core or diamond bit onto the extension's distal end following the bit manufacturer's instructions. Ensure the assembly is correctly seated and tightened where applicable, and verify the rotary hammer's speed and hammering settings are appropriate for core drilling in masonry or concrete. During operation maintain firm control of the tool, apply steady feed pressure, and periodically withdraw the bit to clear debris and allow cooling where necessary.

Usage recommendations

Use the extension only with properly rated rotary hammers and core bits designed for SDS+ connections. Wear appropriate personal protective equipment (eye protection, hearing protection, gloves and dust mask) and follow safe drilling practices. Monitor for excessive vibration or looseness and stop if the connection feels unstable; inspect and replace components that show wear or damage.