If you are looking for a professional and piano metronome pendulum, your research is here. That's because our piano metronome can meet your needs. Using metal materials, practical and durable. Not easy to deform, which brings you a lot of convenience. Features -Color:Silver -Material:Metal -Size:1.80X1.70X0.50cm/0.71X0.67X0.20in - The material is safe and durable, which is wear resistance and practical for the long time use. - The metronome pendulum can and down, and the scale corresponding to the position of the pendulum indicates the number of per minute corresponding to the pendulum. - The replacement piano metronome sliding block is easy to install and requires no additional tools. - Changing the position of the pendulum block can change its vibration period, all a good pendulum block is very important. - Easy to install without any screws, the installation will not take up a lot of your times, suitable for most metronomes. Package list: 2 x Metronome Sliders