Universal clamp-on mount fits poles 0.59–2.28" (15–58mm) – compatible with most surveying rods, tripod legs, bike handlebars, boat rails, and more. Adjustable clamp holds devices 5.3–11.8" (135–300mm), including iPhones, Samsung Galaxy series, and iPads. Dual-stretch design with 4 padded clamp pillars and non-slip cushions ensures a secure, scratch-free grip. Built-in 1/4"-20 female thread for direct mounting to tripods or Leica rods.