Drill Bit Extension Dedra DED1500-35 350 mm with SDS+ Shank for Core Bits

The Dedra DED1500-35 350 mm drill bit extension with SDS+ shank increases drilling reach when using core bits with SDS+ rotary hammer systems. This extension allows operators to work on deeper or hard-to-reach holes in concrete, masonry and other solid materials while maintaining compatibility with SDS+ chucks. Its 350 mm length provides added reach without compromising the mechanical connection to standard SDS+ core drill bits.

Advantages

The extension retains the SDS+ quick-fit interface so it connects securely to SDS+ rotary hammers and core bits. Its rigid, straight design reduces runout and helps keep the core bit aligned during drilling. Made for use with core (hole saw) bits, the extension helps reach recessed areas and allows deeper penetration into walls or slabs without requiring special long core bits.

Suitable for

• Extending reach for core drilling in concrete and masonry
• Drilling recessed or hard-to-reach holes in renovation and construction
• Use with SDS+ rotary hammers and compatible core bits

Key specifications

• Type: drill bit extension for core bits
• Shank system: SDS+ compatible
• Length: 350 mm
• Application materials: concrete, masonry and similar solid substrates
• Connection: straight rigid shaft designed to minimize runout

How to use

Fit the SDS+ shank of the extension into the chuck of an SDS+ rotary hammer until it locks. Attach a compatible core bit to the extension’s mating end, ensuring a secure connection. Begin drilling at low speed to establish correct alignment, then proceed with appropriate hammer or rotary settings for the material. Apply steady, even pressure and allow the tool to do the cutting; withdraw occasionally to clear debris and prevent overheating of the bit.

Usage recommendations

Always use appropriate personal protective equipment such as safety glasses, hearing protection and dust extraction or respiratory protection when drilling. Verify compatibility between the extension and the specific core bit being used. For optimal performance, use tools and bits rated for the targeted material and maintain the extension and bits in good condition.