Separate weight plate to increase stability, for speaker stands with M20 base plate. The plate has a diameter of 12.795" and a thickness of 0.315". There is an additional bore hole for a cable bushing. Self-adhesive rubber buffers ensure non-slip, low-noise operation. The weight is 11.013 lbs. The weight plate can be mounted easily without any tools. Several plates can also be stacked onto each other.