Using these IsoAcoustics speaker stands is easy. First, assemble the stand frames with the height tubing and end - plug pairs. Then, place your speakers on the stands. You can adjust the angle up to 6.5 degrees and the height to get the best listening experience. Remember, these are open - box items, so the packaging may be damaged, and all sales are final. For maintenance, just use a dry cloth to wipe the plastic and steel parts. Avoid using harsh chemicals that could damage the materials. If you have heavy speakers, make sure to choose the right model based on the weight capacity. For example, if your speakers weigh up to 20 lbs, use the ISO - 130 model.