Pulley system as conversion kit for your volleyball facility - You want to equip your existing volleyball posts with spindle tensioning device with a pulley system? No problem! Our pulley system can be retrofitted to the volleyball posts. Simply remove the spindle tensioning device and insert the new pulley system. - 1. for standard posts 80x80 mm and 83 mm - fits Sport-Thieme volleyball posts 80x80 mm - fits Sport-Thieme volleyball posts 83 mm - 2. for DVV 2 - posts 80x80 mm and 83 mm - fits Sport-Thieme volleyball posts 80x80 mm DVV 2 - fits Sport-Thieme volleyball posts 83 mm DVV 2 - 3. For DVV 1 - posts 80x80 mm and 83 mm - suitable for Sport-Thieme volleyball posts 80x80 mm DVV 1 - suitable for volleyball posts 83 mm DVV 1 - The pulley replacement tensioning device can only be inserted into the profiles of the above volleyball posts. The rope of the pulley cannot be replaced individually. - The advantages of the pulley system in a nutshell We supply our volleyball posts with two different tensioning systems for net tensioning. With the well-known spindle device including bending crank or with pulley system. With this system there are no problems with wearing parts like crank, joint and spindle. With our system, twisting or tangling of the blocksrope is impossible. Even by students, the nets are easy to tension and easy to use.