The product is a set of 12 M5 x 10mm male thread knurled clamping knobs, designed as potentiometer knobs for electronic components and semiconductors. These thumb screw on type knobs provide a secure grip and adjustable clamping force for easy operation. Perfect for use in electrical equipment and supplies, these knobs offer a reliable solution for controlling the position and movement of potentiometers and variable resistors in a variety of industrial and office settings.