・ Basically, orders paid by 12:00 PM will be shipped the same day, but items dropped in the post box must be submitted by 9:00 AM on weekends and holidays. ・ Support information will be provided after purchase if necessary in "Mamushi's Flea Market Discussion". This is a silicone tube used in the piping of De'Longhi fully automatic espresso machines, etc. It is secured with an O-ring and a horseshoe-shaped fastener. Although it is a part that does not break, many people seem to fail due to deformation or bending during DIY. The method for inserting the silicone tube is as follows: 1) Thoroughly remove the old O-ring from the insertion port side. 2) Taper the tip of the tube with sandpaper. 3) Apply food machinery grease to the tip. 4) Attach the O-ring to the tube. 5) Insert it vertically and slowly. 6) Push in the metal part with a 4mm wide flathead screwdriver. 7) Insert the horseshoe-shaped fastener. No force is required at all, and using pliers is out of the question. The following URL explains this, including the introduction of tools: https://note.com/mamushi_shop/n/n402c12e336a0