Adjustable Wrench: This type of wrench has a movable jaw that can be adjusted to fit various sizes of nuts and bolts. It typically has a sliding mechanism or a worm gear to adjust the jaw width.

Combination Wrench Set: A combination wrench set includes a range of wrenches with open ends on one side and closed ends (or box ends) on the other. Each wrench in the set has a different size, allowing you to work with various fastener sizes.

Socket Wrench Set: Socket wrenches utilize interchangeable sockets that fit onto a ratcheting handle. A socket wrench set usually contains multiple socket sizes, allowing you to work with different bolt or nut sizes. The sockets attach to the handle using a square drive mechanism.