Carbide Tip - Flexi Shank Bellhanger Drill Bit 3/16" Shank With 1/2" Bit, 54" Long
You have a sidewalk between your gas light and the house.
And you want to go under it in 15 seconds.
I've been using this trick for years and I love it. Make sure when you dig down below the concrete, you drill across, horizontally so you will find it equally as deep on the other side.