The 1799-POLOLU is a 12-inch (30-cm) cable attach to a 3-pin female JST PH-style connector and 0.1" male pin separately on each wire.
These cable will mate with the connector on 3-pin Sharp analog distance sensors, such as the GP2D120XJ00F (4-30 cm), GP2Y0A21YK0F (10-80 cm), and the GP2Y0A02YK0F (20-150 cm).
The wire color scheme matches the Sharp distance sensor pinout: red for power, black for ground, and white for signal. The connector pins have a 2 mm pitch.