The Claw™ pole clamps are designed to prevent the user from over-tightening the clamp screw and accidentally crushing or cracking the pole. The clamping function is limited so over-tightening cannot occur. These clamps are compatible with our existing 5198-series cradles for most popular data controllers, or you can pair one with The Claw™ quick-release cradle (5200-05X) for your collector/controller. These clamps are designed to fit a pole diameter of 1.25 inches (32 mm) - however, a 1-inch pole can be used with a SECO adapter (D11145).