Great CDL test prep booklet. I like that this book includes practice questions to better prepare you for the test itself. I also like how well the book flows it seems to cover all the basics for the test as well. I like how under the walk through section it doesnt just say to make one it goes into detail and tells you what exactly you should be checking. i like how much detail this book goes into to show you exactly what to do in a multitude of situations even something like down shifting. I like that the answer keys are available for you to check yourself. I received this product for free in exchange for my honest and unbiased review.

This quieted my Shurflo water pump considerably. It only took a few minutes to install and was very straight forward.