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• A generic name for many types of wrenches that have large, flat-sided jaws.
• Good for general purpose plumbing use.
• The Adjustable type is an all-purpose model with notched jaws ideal for various sizes of nuts. It is the handiest and most common.
• The Fixed type works with large spud nuts under kitchen sinks.
• The 4-in-1 is similar to the fixed type and is use for turning locknuts on the toilet tank, basket strainers and spuds.
• The Closet type is designed for toilet tanks and bowls.
• The Internal type holds the sink strainer basket in place while you tighten the locknut below. It can also remove or install closet spuds, pop-up plugs, and strainers.