PDT Explorer/Probe 23 item #R225 is a diagnostic dental instrument made in the USA. These dental instruments are colored coded for faster recognition. PDT Explorers are purple in color. The blades are made of 440A Hard steel to stay sharp and thin for easy handling. Resin body is very light and easy to handle. The body of the instrument is made in such a way that the dentists can grasp the instrument easily without creating any kind of fatigue to the hands of the dentists. One end of the PDT Explorer Probe 23 has a curved part similar to a regularly used explorer. The other side of the probe consists of a bent end. This end has bands of different colors which ensure that the dentists can quickly detect the instrument during diagnosis and any of the dental procedures.