Round shank is designed for use in power drills, drill presses, and boring machines with 1/2" or larger chuckFull-length heat treated bit guards against bending in heavy-duty applications and strengthens the twist where the greatest strain occursHeavy stem increases strength and rigidity while reducing vibration. Shank length is 2"Medium-fast screw point ideal for general woodboring applications Diameter: 1" Twist Length: 10" Overall Length: 12"