There is a secret to this wrench, and that secret is that it is actually a Snap-On product, sold under a different name (the company CDI is a subsidiary owned by Snap-On, the high quality California based tool maker).
This means you get a great quality tool at a far lower price than you would expect to pay for it. The scale is very to read and the spring-loaded lock could not be faster or simpler to set.
This is a great tool to keep on hand during protracted jobs where different torques forces are required, as resetting is so simple. This is an excellent, solid tool that will last a long time for a far lower price than the exact same model with a different brand name.