Drill Bit Extension Diam 300 mm for 1 1/4" Diamond Core Bits — Diam

Diam Drill Bit Extension, 300 mm length, is designed to extend the reach of 1 1/4" diamond core bits for core drilling in concrete, masonry and similar construction materials. The extension rod provides a rigid connection to compatible 1 1/4" diamond cores and allows drilling at greater depths or into recessed and hard-to-reach areas without changing the primary coring bit.

Advantages

The extension increases usable drilling depth while preserving drilling accuracy and stability. Constructed to work with standard 1 1/4" diamond cores, it reduces the need for repositioning or multiple tool changes on site. Its robust design helps transfer torque efficiently from the drill to the core bit, minimising wobble and wear during prolonged operations.

Suitable for

• Deep core drilling in concrete and reinforced concrete
• Drilling in masonry, brick and stone
• Accessing recessed or hard-to-reach drilling points
• Installation work requiring extended reach for plumbing, electrical or HVAC penetrations

Key specifications

• Length: 300 mm
• Compatible core diameter connection: 1 1/4"
• Application material: concrete, masonry, brick, stone
• Function: extension rod for diamond core drilling to increase reach

How to use

Attach the extension firmly between the drill machine arbor and the 1 1/4" diamond core bit following the drill and core manufacturer guidance. Ensure all connections are tightened and locked before starting the machine. Use appropriate drilling speed, feed pressure and water cooling as recommended for diamond core drilling in the chosen material. Periodically stop to clear slurry and check the connection for tightness during extended drilling sessions.

Usage recommendations

Use the Diam 300 mm extension together with matching 1 1/4" diamond core bits and follow safety procedures: personal protective equipment, correct coolant/water supply, appropriate drill machine capacity and secure workpiece clamping. Avoid excessive lateral forces and monitor for overheating to extend component life.