This is a replacement part to expand the range of motion of the Okamura Sylphy's armrests (rotates 360°). There may be differences in the internal shape depending on the manufacturing period. Please note that I have only confirmed the operation on my own Sylphy, so I do not guarantee that it will work on all Sylphy models. Customization is at your own risk. *Before purchasing, remove the cushion part of the armrest on your Sylphy and check if it has the same shape as the photo of the part before replacement attached to this page. *This product is made with a 3D printer, so there may be layer lines and slight individual differences.