The RF7 Grand-Voule listening turret offers many adjustment possibilities, allowing you to always have the best blocking and listening release angle. The jammer and the guide can also be mounted under the arm if you prefer to release the rope by pulling down. Two bunk ball bearings support the arm and stops limit rotation to 260 °. These stops can be removed to allow 360 ° rotation. A system makes it possible to brake the rotation of the arm. This prevents at the cottage, the arm will turn into the wind. This system can, of course, be disengaged to allow completely free rotation. Ball Bearing Swivelling Cleat Base, Medium C-Cleat ™, 5mm (3/16 ") Pin Adjustable Height and Angle of Cleating Arm for Optimum Control Twin Ball Bearing Race Adjustable Ratchet System