Are you bothered by creaking noises from your full bucket seat? Does it make a creaking sound when you shake the backrest? Even after tightening the bolts repeatedly, the noise returns... or rather, you're worried about damaging the bolt holes if you tighten them too much, right? In such cases, the problem can be solved by inserting these Teflon washers between the seat and the side adapter. Are you someone who has given up, thinking "that's just how full bucket seats are"? *This does not apply if the seat itself or the seat rails are the cause of the play.* The second photo shows an example of use. Even with the seat installed in the car, you can easily install these by removing the side bolts one by one and sliding the Teflon washers in between. These are thin washers made of PTFE (fluororesin) material, which offers excellent heat resistance (continuous 240°C, non-flammable), chemical resistance, solvent resistance, oil resistance, weather resistance, non-stick properties, and low friction. (Also known as Teflon, but Teflon is a registered trademark of DuPont.) Inner diameter (Φ): 8.3mm Outer diameter (Φ): 22mm Thickness: 0.8mm *There may be slight variations.* Brand new, unused. Stored in a non-smoking / pet-free environment. I still have a few in stock, so I'll offer a small discount if you purchase multiple items. Please consult with me beforehand regarding the number of washers you need. #FullBucketSeat #RECARO #BRIDE