・ Basically, items paid for by noon will be shipped the same day, but there may be times when we are unable to ship due to unforeseen circumstances such as sudden illness. In such cases, please request a cancellation. ・ We will provide support information after purchase if necessary in "Mamushi's Flea Market Discussion". This is a supply of a working extraction unit rail. The unit rail is a part that is subjected to strong forces, so it may become distorted, but this product is in good condition. There is a controller that controls the fixed position of the extraction unit, and this product is operating normally. There is no failure where the extraction unit does not return to its fixed position. In any case, the operation of the extraction unit rail has subtle points, and even with this normally operating product, we cannot guarantee that there will be no unstable behavior, so please be understanding in such cases.