This is a new design. Delicate appearance with steel construction can supports less than 10lbs ( 4.5 kg), and it fits 1/4" 20, 4mm and 5mm of the thread size. Clamping design fastens the ball stably, then the ball design realized tilting, swing and rotating perfectly. In addition, each mount has 2 toggler bolts, so the mount can be installed on drywall/rocksheet. brand speaker mount, please report to if the product you received without brand.