I bought the set of two, simply because yet were 14 bucks. I've forced myself to use them at work over the last week, bypassing all other screwdrivers just to see. The double drive feature is useless 99% of the time. I installed a snorkel on a Linde, and various hoses going to a vaporizer. You can't ever hold the collar cause you are holding the part in question. It did however show me that I have a need for a good, quality ratcheting screwdriver. Can't wait till the SO guy comes thursday haha.