The invention provides compositions and methods for the convenient compounding of pharmaceuticals. The head includes a face having a socket for releasably retaining the ball such that when the head is swung, the ball is released. Although it is sufficient if the a-axis length of the crystal lattice is 499 pm or more and the c-axis length is 405 pm or more, by further specifying the a-axis length and c-axis length depending on the values of ABx, a hydrogen storage alloy having high durability can be provided. The dividing wall is formed between the ventilating housing part and the carrier housing part and a suction arrangement is formed in the form of a suction jet pump which is configured for extracting oil from the dividing wall. The connecting portion is provided with a protrusion protruding toward the first tooth portion. Therefore, it is possible to more efficiently use the spare areas of the disc.