Adjustable Wrench Set

A set of adjustable wrenches spanning several sizes, each one able to grip a range of nut and bolt sizes on its own, letting the user cover most mechanical fasteners they're likely to encounter without carrying an entire fixed-size set along.

An adjustable jaw never grips quite as securely as a properly fitted fixed wrench, so it can slip under real torque if it isn't set carefully to the fastener first.