How a Left Hand Drill Works - 2016

This is a demonstration of how a left hand drill works , this video was made in 2016 , I am working to remove stainless steel machine screw 1/4 - 20 , I am work to remove the weather cover of a fan unit .
I am using this left hand drill set - https://www.amazon.com/Tools-Cobalt-64-Inch-Assortment-30520/dp/B0002NYBJG/ref=sr_1_1?ie=UTF8&qid=1527447368&sr=8-1&keywords=irwin+left+hand+drill+bit
Using the same set i recently remover a #6-32 from a cast wall receptacle .

Видео How a Left Hand Drill Works - 2016 канала 45NUTS