The diameter of the holder's shaft? is about 9mm<span id="tran_0_5">.</span> It can provide easy positioning and stability with no stress on your boom pole and no scratching.<br><br><strong>Features:</strong><br>Simple design for easy positioning of your boom pole.<br>The diameter of the holder's shaft? is about 9mm<span id="tran_0_5">.</span><br>No clamping jaws to stress your boom pole.<br>With soft rubber coating， protecting boom pole from scratches.<br>Lightweight and small enough， convenient to pick in your kit.<br><br><strong>Specifications:</strong><br>Material: Stainless Steel<br>Shaft Diameter: Approx. 9mm<br>Item Size: 18 * 13.5 * 7cm / 7.1 * 5.3 * 2.8in<br>Item Weight: 233g / 8.2oz<br>Package Size: 25 * 18 * 7.5cm / 9.8 * 7.1 * 3.0in<br>Package Weight: 311g / 11oz<br><br><strong>Package List:</strong><br>1 * Pole Holder