1/4"- 20

The FlipToggle® anchor's strong toggling mechanism supplies extra holding power in drywall, plaster or hollow concrete blocks. Its main feature is its ability to be installed in thicker hollow wall material, up to 3 in thick. Its simple and effective tilting mechanism ensures a trouble-free installation every time and is twice as strong as the regular toggle bolt of the same bolt diameter. The FlipToggle® requires a 1/2 in hole regardless of its diameter and can be used with any bolt length.