This is a single turn 10K Ohms Preset Potentiometer, which can provide variable resistance on adjusting the knob with a screwdriver. Because of its breadboard friendly and easy PCB mounting nature, it commonly used by hobbyists as well as by professionals. The pot can also be called as Trimpot or Trimmer Pot. 

Specifications for this 10K Trimpot:

• Material used: Metal
• Value: 0-10K