The set consists of two different counterweights. The larger counterweight weighs 300 gr / 0.66 lb, the two smaller counterweights weigh 150 gr / 0.33 lb each. The larger counterweight is equivalent to the weight of a cforce mini motor. Thus, the counterwight are perfect for getting difficult camera setups into perfect balance. The 3/8 threads allow the weights to be screwed together, as well as easily attached to the camera. The counterweight can also be clamped to 19mm pipes via a RMB-3 clamp. The Counterweight is made of stainless steel. Weight: 300gr / 0.66lb 150gr / 0.33lb