PROTECTION FOR FLOORS ✔ No more fear of scratches and smudges on the (sensitive) floor: Due to the soft and supple surface of the rollers, these problems are no longer an issue – your floor protection mat has now become obsolete. | LIGHTWEIGHT & QUIET ✔ Due to the high-quality premium ball bearings, the rollers are particularly smooth // Due to the substrate-friendly plastic surface of the rollers, the office chair glides very quietly over the floor. | EASY TO ASSEMBLE ✔ The tools are easy to change without tools: pull out the old rollers from the base and simply insert the new plain rollers – super comfortable & easy! | SUITABLE ✔ Due to the standard size of 11 mm, the silver metal pins fit into almost any office chair – exceptions are Ikea & Topstar chairs, because the base of these chairs has a 10 mm hole. | ROBUST ✔ The sturdy metal frame and the high carrying capacity of all reels totaling 300 kg (60 kg per reel) make the quality reels strong everyday helpers. If you do not like the universal rolls, you will get your money back.