Not only do they look cool, but the holes in the corners of the Pro Tambourine are there so it can easily slip onto the new ProMount. The mount will fit onto a DSM2 or a DSM Quad Mount, (or any other device that attaches to a stand and accepts a standard 3/8" rod), and allows the Pro to slip on and off so that it can instantly be converted to a mounted tambourine. The ProMount is designed exclusively to mount the Rhythm Tech Pro Tambourine and will not fit either the original Rhythm Tech Tambourine or any other brand and is sold separately.