These Rubber Feet from OConnor are a set of 3 protective padded feet designed to fit the 30L and 60L OConnor tripods as well as the 100 and 150mm Sachtler tripods. In order to install the feet simply rest the tripod’s original foot in the rubber foot and stretch the rubber strap over the tripod leg to hold it in place. These feet are ideal for use indoors or when spikes are not necessary. Additionally, at just 1.2 lb, the feet add a negligible amount of weight to your tripod setup.