Easily clamps to pole with special design to prevent overtightening the pole clamp screw. Clamping feature is limited to prevent overtightening on pole Ideal for RTK and GNSS surveys requiring a pole and a data collector Made of anodized aluminum for durability and performance Designed to fit a pole diameter of 1.25-in (32mm) Compatible with most popular quick-release cradles to hold data controllers Wgt 0.30 lb (0.14kg)