HIGH-QUALITY MATERIALS: This ladder stability anchor is made of high-quality aluminum alloy, hard and lightweight. Anodized black and orange surface, keep excellent finish, corrosion resistance and durability. QUICK INSTALLATION: There is a laser engraved inch scale at the bottom of the ladder stability anchor. Before clamping the object, you can preset the clamping width according to the measured object width, so that you can quickly install the ladder stability anchor to the position you want to install. No special tools required, just a few seconds to attach.