In a power roller for a toroidal continuously variable transmission, temperature rise of a power transmission part can be prevented by suppressing the heat in a rolling contact part between a ball and an inner race groove. The stretching portion is stretched into the large intestine of the animal and transmits the liquid so as to soften the feces, and the feces is then sucked out from the large intestine through the feces suction channel by the suction force. Using a liquid stripping agent based on a polyvinyl alcohol or a long-chain hydrocarbon mixture and a polysaccharide filler on the point of the conductor being kept free of the insulation locally prevents the bonding agent from bonding to the conductor or the individual conductors of the transposed conductor from being interconnected by means of the unsolidified mixture.