It is recommended to use double-cutting Augers in uncased drilling operations or when dealing with larger hole diameters.

Parameters

• 70mm high spiral: With a special design, the 70mm high spiral (more than double the height of the conventional 30mm one) is beneficial for removing debris and cuttings at the bottom of the well.
• Roundness tolerance of 2mm: Great attention is paid to roundness to ensure a concentric core barrel, which is crucial for the performance of the roller bit core barrel.
• Taller and firmer bottom ring: More materials are used to increase the height of the bottom ring, preventing it from deforming during operation and when replacing roller bits and picks.
• Self-adjustment cutting removal blade: It can wear out together with the roller bit and always maintain its own height, effectively removing cuttings at the bottom of the well.