Best for drilling with core cutters in large diameters.

• The SDS-max electric drill can be used in the rotary mode.
• When a large-bore core bit is used, an electric drill providing the recommended speed can be used.
• Use with an electric drill, which gives the peripheral velocity suitable for a large bore, can draw the best out of the cutter's performance and extend its useful life.
• Use with the recommended peripheral velocity offers safe operations.

• Boring the holes having the size of a Hume tube or extractor fan with the Drimond core bits, Hyperdia core bits, Wooding core bits, etc.