Product Description: This product is an adjustable inductance with an adjustable magnetic core. It is a UH-class inductance widely used in radio communication. Commonly used for LC oscillation frequency adjustment, radio remote control emission coupling inductance, and more. Product Parameters: Inductance Value: Core inside the skeleton Core Diameter: 6mm, Height: 9mm Adjustable Minimum Value: 17uH Adjustable Maximum Value: 37uH Lowest Magnetic Core Value: 34uH (when magnetic core is adjusted to the lowest position) Constant Value: 13.8uH without core Applicable Frequency: 25MHz~100MHz Number of Turns: 50TS Wire Diameter: 0.25mm Package Includes: 10 x Magnetic Core Coils Note: 1. Please allow 1-2mm error due to manual measurement; ensure you don't mind before ordering. 2. Due to the difference between different monitors, the picture may have a slight difference in the actual color of the item.