Castor Wheels Topstar 6990-4 for soft floors, set of 5, compatible with office chairs

Set of Topstar 6990-4 castor wheels for soft floors, supplied as five pieces compatible with standard office chairs. These castors are designed to improve mobility on carpet and other soft surfaces while reducing wear on the flooring. The set fits chairs with a 10 mm stem diameter and offers smooth rolling for everyday use at home or in the office.

Advantages

Topstar 6990-4 castor wheels are made for soft floors and provide quiet, even movement on carpeted surfaces. The design helps distribute load to reduce marks and wear on upholstery and flooring. Supplied as a set of five, the wheels are compatible with common office chair fittings (10 mm stem) and are simple to replace without special tools.

Suitable for

• Office chairs used on carpeted floors
• Home workstations with soft flooring
• Replacement of worn or damaged castors on compatible chairs

Key specifications

• Brand: Topstar
• Model / MPN: 6990-4
• Pack quantity: set of 5
• Stem diameter: 10 mm
• Intended floor type: soft floors (carpet)
• EAN: 4014296624068

How to use

Remove the old castors from the chair base by pulling them out or using gentle leverage if necessary. Insert each Topstar 6990-4 castor by aligning the 10 mm stem with the socket and pressing firmly until it clicks into place. Verify that each wheel rotates freely and that the chair sits evenly before use.

Usage recommendations

For best performance on carpet, ensure sockets are clean and free of debris before installation. Replace all five castors at the same time to maintain even chair height and balance. Regularly inspect wheels for hair and dirt buildup and clean as needed to preserve rolling performance.