Crescent’s Flip and Grip folding ratcheting wrench set (CFW2) is more compact and quicker to use than an ordinary adjustable wrench. They can fit a wide range of fastener styles and sizes, and fold up for storage and transport.
You can pivoted and lock in the wrench heads at different angles, which can be useful for reaching fasteners in tight spaces. Spring-loaded jaws provide a ratcheting action for speedy wrenching.
The wrenches are sold in sets of 2 sizes: a 6″ wrench that can fit fasteners with 1/4″ to 7/16″ flats (6-11 mm), and an 8″ that can fit fasteners with 1/2″ to 3/4″ flats (12-19 mm).
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These wrenches appear to be identical to Craftsman’s ratcheting clench wrenches, which are presumed to have also been manufactured by Crescent. I wouldn’t use them for heavy duty fastening tasks, but they do seem fairly versatile for casual on-the-go applications.