Designed to suit most common anchor bolt sizes at the center and corners of your pad without having to produce a hole with the thickest Section of the pad. [ FLOORING PROTECTION ] No scratches on the ground! Furthermore, our anti vibration pads for washing equipment secure the floor better https://compressor-vibration-pads03578.blogsvila.com/39764170/about-ribbed-rubber-pads-for-rooftop-hvac-systems