3/16 1/4 дюймовый рычажный болт с пружинным

The Strap Toggle is a pre-assembled anchor consisting of a carbon steel wing and a locking cap/ratchet leg assembly molded from engineered plastic.

For the size of  5/16" and 3/8 "   price and other detail information , pls visit below link :

https://www.alibaba.com/product-detail/5-16-3-8-inch-spring_62133244933.html?spm=a2747.manage.0.0.359e71d2F9n0LQ

The Strap-Toggle is a heavy duty hollow wall anchor designed for use in base materials such as plaster, wallboard, concrete block, plywood or hollow tile.

advantage :

compared to traditional toggles, this unique anchor can be installed in a smaller hole and does not require a fixture or screw to set it. The anchor can be easily adjusted to accommodate a wall thickness of up to 2 1/2" while using a shorter bolt.