Here is a listing of a set of 4 Universal Heavy Duty Frame Machine Anchoring. Wide open grab about 3 1/2 inches. Raises about 1 ft High. Comes with 4 anchors blots, nuts & washer. That the color of these clamps might be different from pictures depending on availability. Must be zoned commercial or industrial. Must be owned or leased by a registered business. Must be accessible by a tractor trailer. Residential or home businesses. Limited access may also include commercial businesses not open to the walk-in public or where an employee is not available to assist with loading or unloading. Camps, places of worship, educational institutions, construction sites, fairs and carnivals, individual/mini storage units, military base/installations, mine sites, some government facilities, schools, businesses located outside city limits, rural locations and farms. Locations outside of the continental US.