Metal powders are pressed into compacts more readily through the addition of a minor percentage of dimethyl sulfone binder. Probe carriers manufactured by a probe carrier manufacturing apparatus having ejecting portions for ejecting probe solutions, each containing a probe, which can be specifically coupled with a target substance, for applying the probe solution on a carrier, and a plurality of probe tanks storing mutually different probe solutions for supplying ejecting portions. The handlebars provide the illusion that the front fork tubes continue upwardly through the upper triple tree to form the handlebars.