Use this Ground Spreader from SmallRig with select tripods, including SmallRig's 4465, 4463, 3989, and 4167 model tripods. It is easy to adjust the length of each arm using a locking knob to telescope out each extension, and the adjustable radius of the spreader is 34.2 to 54.3".
The ground spreader is made from durable, lightweight plastic and aluminum, and a center ring provides a quick breakdown of the spreader for transport.