My first Diesel truck was a 64 cabover International. You could raise the cab and get to everything. About 25 years ago, drivers started demanding long hoods. We called them large cars and the motor was about 6" in front of the fire wall. The last 15 years I have had to go to set back front axles for aerodynamics and weight distribution on the steering axle. About 1/3 of the motor is in a dog house inside of the cab and things have become a real challenge to get to. Of course, an impact is our first choice, a regular ratchet our second choice, but for the tough challenges, a flex ratchet gives one a real advantage. It saves a lot of knuckles as well as bolt heads getting rounded. I haven't used my old Snap On flex since I got the Wera. All it does is flop around and round of bolt heads. I am in Germany at the moment. The hotel is about 1/4 mile from a Würth store. I haven't went in because I am afraid of what I'll spend.