It is a top and bottom separable mounting cup made of plastic material. There is almost no deformation due to resin, so it can be used for a long time. There is a side that is somewhat difficult to separate the mold due to adhesion during resin curing. It is easy to attach if the lower part is made of plastic material and an adhesive, etc. should be used in addition to the use of a molding clip. If necessary, the Mold Release may be used to reduce the inconvenience of separation.