The spherical swivel chair on ZDF that is being referred to is the one on the popular German television show called "Wetten, dass..?" This iconic chair is known for its unique design and is used by the show's guests when they make their entrance onto the stage. The chair is a symbol of the show's long-standing history and is often associated with the fun and entertaining atmosphere of "Wetten, dass..?" **

Yes, the casters on this particular item are swivel casters, which means they can rotate 360 degrees, allowing for easy maneuverability. However, they do not have a locking mechanism to make them rigid, so they will continue to swivel freely. This design is ideal for applications where constant movement and flexibility are required. **

To disable the swivel function on a Stressless chair, you can remove the swivel ring from the base of the chair. This can usually be done by turning the chair upside down and unscrewing the ring from the base. Once the swivel ring is removed, the chair will no longer be able to swivel. Keep in mind that this may require some disassembly of the chair, so it's best to refer to the chair's manual or contact the manufacturer for specific instructions. **

Frontline Spot On is a topical flea and tick treatment for dogs and cats. It is applied directly to the skin on the back of the neck and provides long-lasting protection against fleas, ticks, and lice. Frontline Spot On works by killing parasites on contact, preventing infestations and protecting pets from the diseases these parasites can transmit. It is a popular choice among pet owners for its effectiveness and ease of use. **

Yes, the Swivel Sweeper can help with vacuuming up stubborn lint on the carpet. Its powerful suction and rotating brushes can effectively lift and remove lint from the carpet fibers. The swivel head also allows for easy maneuverability, making it easier to reach and clean areas where lint may be trapped. Overall, the Swivel Sweeper is a convenient and effective tool for removing stubborn lint from carpets. **

The spherical swivel chair at ZDF that is meant is the one designed by the German designer Konstantin Grcic. This chair is known for its unique spherical shape and ability to swivel in all directions, providing a comfortable and versatile seating option. It has gained popularity for its modern design and functionality, making it a standout piece in the ZDF studio. **

I'm sorry, but I am unable to physically inspect the headphones. It would be best to visually inspect the swivel part of the headphones to determine if they are broken. If there is visible damage or if the headphones are not functioning properly, it may be a sign that the swivel part is broken. If you suspect that the headphones are broken at the swivel part, it would be best to have them examined by a professional or contact the manufacturer for assistance. **

To best install swivel chairs, start by assembling the base according to the manufacturer's instructions. Then, attach the seat to the base using the provided hardware. Make sure to tighten all screws and bolts securely to ensure stability. Finally, test the swivel function and adjust as needed before using the chairs. If you encounter any difficulties, refer to the instruction manual or contact the manufacturer for assistance. **