A spindle motor for use in a disk drive having a base frame, a housing cover, a fixed shaft and a rotatable bearing sleeve. In an alternative embodiment, the members, such as member 12, 14 each include a ridge, such as ridge 212, which is selectively, removably, and frictionally placed within slot 236. Pairs of transversal holes are provided in proximal portions of the rod and the sleeve. The composition cleanses, exfoliates, and conditions the skin. The liquid discharge passageways are disposed at plural sites and the cyclone separator further contains a liquid pressurizing chamber formed around the plural liquid discharge passageways in communication therewith, and a liquid introduction passageway for introducing the liquid containing the fine substance into the liquid pressurizing chamber. The conditions may be selected such that DNA released from the cells is electrochemically denatured so as to be available for use in an amplification procedure.