Tuote 100695. Tension spring 30x19.5x6 mm black steel 0.5 mm. Good at building 3D printers, tinkering with Arduino devices, tinkering with RC devices and of course good to have at the bottom of the spare parts box just in case. High-quality and not immediately losing its strength, used e.g. in certain professional devices.
The end of the loop of the spring is very close to the spring itself, which means that it cannot come loose from its holder easily if the pulling force exciting the spring suddenly disappears from the other end and the spring can then start rotating around its holder.
