The wedge anchor bolts, concrete cavity depth and no higher cleanliness requirements, easy to install and inexpensive. Jacking by selecting the appropriate thickness of the buried depth, with the increase of buried depth, tension increased after the products are reliable and expandable functionality. Body material: stainless steel, carbon steel and other metal materials. Also known as through bolts, expansion bolts and expansion anchors, which is designed for consistent performance in concrete. There has three kinds of wedge anchors: fully threaded, partial threaded and the full-bodied wedge anchor. Wedge anchor can be hammered below the surface of the concrete while no longer needed. Anchor diameter equals drill hole size. The expansion clip is formed around anchor, providing full expansion for dependable,superior supporting power. Expanding clip will not fall off or twist in the hole. Each wedge anchor has a minimum embedment requirement. The anchor diameteris the same as the drill hole size. Widely used in securing the through objects' fastening, such as equipment,channel steel, guide rail, holder, steel structure, escalator, handrail and curtain wall etc. Every wedge anchor can be suitable for the standard anchorage depth, and also fit for shallow mining depth, to provide supreme flexibility for installation. Moreover the long thread offering the spacing installaiton, and can be flexibly adjustable to easy the installation.