Spotted a version of this product on a US website describing how to disconnect pipework to a Jeep oil cooler. Incredibly simple to use (just slot over the metal pipe and push up into the socket of the flexible hose - one wriggle and the pipe is disconnected !) Great product - rapid delivery.
Great guide to the test questions. work your way through the book and you should be fine with the test. Three of us have used this book to revise and we have all passed with scores of 100%. Can't say fairer than that !