TheSpider SpiderPro Anti-Twist Pin v2 is for the SpiderPro Clamp, SpiderPro v2 Plate, Lens Collar Plate, and SpiderLight Plate only. Engineered to prevent de-threading, once you've got this Pin securely attached, it will stay attached until you're ready to remove it. The Pin's ball head provides free movement for your camera while attached to the Holster.
