This set of three Stackable Weights from Freedom360 can be used in a variety of ways, from adding weight to the bottom of a monopod, to helping weigh down a mini tripod for increased stability. When used with a monopod, the added weight shifts the center of gravity closer to the bottom of the pole, helping counterbalance the camera for steadier handheld shooting. Each piece weighs 1.1 lb and features a 3/8"-16 screw on one side and a 3/8"-16 mounting thread on the other, making them easily stackable. You can even mount a compact mini tripod, such as Freedom360's optional Tabletop Tripod, to the bottom to serve as part of a free-standing monopod system with added heft for stability.