1、Specifications: A page contains 12 different capacitance values, with 50 capacitors for each value placed separately for easy access, easy identification, and no interference with each other; Loose leaf design, flexible to use in multiple scenarios 2、Solid Structure: Hot gold text paired with a leather touch case, like a thick book, convenient for storage and carrying; Metal buckle frame, sturdy and reliable; Side capacitor symbol identification for easy access; Built in encoding symbols, clear and intuitive 3、COG Capacitor: Low loss, high insulation, good temperature feature, especially suitable for coupling capacitors in oscillators, resonant circuits, high frequency circuits, and other circuits that require low loss and stable capacitance, or for temperature compensation 4、X5R X7R Capacitor: The capacitance changes nonlinearly with temperature, resulting in significant losses. It is commonly applied in electronic devices for bypass coupling or in other circuits that do not require high stability in terms of losses and capacitance 5、Powerful and Practical: With industrial production and mechanical locating cutting, these samples have accurate lengths; High performance materials endow these capacitors with powerful function, widely applicable for maintenance, teaching, experiment, and more