GT Shakti 4 Inch Double Spiral Drill Bit is a precision-engineered earth auger bit designed for post-hole diggers and earth auger machines. The double spiral design allows for superior soil removal and prevents clogging, ensuring smooth and efficient digging in a variety of soil types, including clay and gravel. With a durable steel construction and a 4-inch diameter, it is ideal for agricultural planting, fencing, landscaping, and foundation drilling.