Which kind of drywall or hollow wall anchor comes in the largest diameter?

Toggle bolts are designed to provide superior grip and support for heavy loads when installed in hollow walls or drywall. Their mechanism consists of a pair of wings that open up or expand behind the wall once the bolt is inserted through it. This design allows toggle bolts to distribute weight over a larger area, giving them a larger diameter compared to other types of anchors.

In contrast, plastic anchors, expansion anchors, and screw anchors typically feature more limited diameters and are primarily suited for lighter loads. These alternatives rely on different methods for securing themselves within the wall, but they do not achieve the same level of bearing capacity and size that toggle bolts offer. Therefore, toggle bolts are the go-to choice when larger diameters and stronger support are needed in drywall applications.