Moody’s miniature open-end wrenches don’t look like most wrenches. Made for smaller-sized fasteners, they have a very thin head that attaches to a narrow shaft, letting you get at fasteners in places that your standard set of combination wrenches would never fit.
Moody uses hardened steel for the blades and nickel plates the ball-end handles. The wrenches come in 5/64″, 3/32″, 7/64″, 1/8″, 5/32″, 3/16″, 1/4″, and 5/16″ English sizes and 2.5mm, 3.0mm, 3.2mm, 4.0mm, 5.0mm, 5.5mm, 6.0mm, 7.0mm Metric sizes.
They sell both wrenches with handles and just wrench heads (blades) with a universal handle; presumably the latter is a consideration if your space, weight, or budget allowance for tools is at a premium. It isn’t clear whether you can remove the blades on the wrenches that come with handles, but the interchangeable handle looks exactly like the ones that come on the wrenches with handles.
You can buy the wrenches individually, in sets with handles, or just the blades. Pricing depends on what you buy exactly; for instance the set of all 16 English and Metric wrenches in a canvas roll runs anywhere from $40 to $70.