Dottie Flip toggle kit includes (10) 1/4-Inch-20 x 2-1/2-Inch screws and (10) 1/4-Inch FlipToggle®. It is suitable for use on hollow wall up to 2-1/8-Inch thick and for ceilings. It is compatible with any bolt length. The one strap design helps in easier insertion and flipping operation.