Final answer:
The best drill bit for drilling a half inch hole through a metal table leg is a 1/2 inch twist drill bit.
Step-by-step explanation:
In this case, the best drill bit to use would be a twist drill bit. A twist drill bit is a common type of drill bit that is suitable for drilling holes through metal. It has a pointy tip and spiral flutes that help to remove the metal shavings while drilling.
When drilling a half inch hole, it is important to choose a drill bit with a diameter that matches the desired hole size. In this case, you would need a 1/2 inch twist drill bit.
Make sure to use appropriate safety precautions, such as wearing safety glasses and securing the table leg before drilling.