WARNING
Always avoid knots.
DO NOT drill this into the center. Be Cautious for the reversing torque.
[WARNING]: If you drive this into the center of a hard piece of firewood with a powerful drill, it will get stuck and put you in danger of twisting your wrist badly or setting the wood spinning.
[WARNING]: High torque. Use a handle with the impact driver or it may hurt your wrist.
[WARNING]: High torque. Fix the wood piece or it may spin and hit you.