Features Multiple Sizes: Choose from 30 double-sided prototype boards in 4 different sizes, catering to various design needs for DIY electronic projects. Comprehensive Components: Includes 175 electronic components in a convenient plastic storage box, facilitating easy organization for electronic experiments and projects. Secure Installation: Features 4 mounting holes for easy and secure installation, ensuring peace of mind during use. LED Variety: Equipped with 60 3mm light-emitting diodes in 5 different colors - red, yellow, white, blue, and green, offering a range of options for electronic projects. Connector Variety: Comes with 10 40-pin male connectors and 10 40-pin pitch right-angle male connectors with 2.54mm/0.1in spacing and single-row direct headers, providing versatility for circuit connections. Specification: Item Type: Circuit Board Commodity Material: ABS The Distance Between 5.08-301-2P and 5 5.08-301-3P: Approx. 5.08mm/0.2in 5.08-301-2P and 5 5.08-301-3P rated voltage: 300V 5.08-301-2P and 5 5.08-301-3P rated current: 16A Led Diodes: 60 3mm Light Emitting Diodes, 5 Colors (red, Yellow, White, Blue, Green), 12 for Each Color Package List: 10 x 2x8cm Prototype General Version 10 x 3x7cm Prototype General Version 5 x 4x6cm Prototype General Version 5 x 5x7cm Prototype General Version 10 x 40-pin Male Connector 10 x 40-pin Pitch Right Angle Male Header 12 x 3mm White LED 12 x 3mm Red LED 12 x 3mm Yellow LED 12 x 3mm Green LED 12 x 3mm Blue LED 40 x Female-to-female Cable 5 x 5.08-301-2P 5 x 5.08-301-3P 15 x Tactile Lid Switch Package List 10 x 2x8cm Prototype General Version 10 x 3x7cm Prototype General Version 5 x 4x6cm Prototype General Version 5 x 5x7cm Prototype General Version 10 x 40-pin Male Connector 10 x 40-pin Pitch Right Angle Male Header 12 x 3mm White LED 12 x 3mm Red LED 12 x 3mm Yellow LED 12 x 3mm Green LED 12 x 3mm Blue LED 40 x Female-to-female Cable 5 x 5.08-301-2P 5 x 5.08-301-3P 15 x Tactile Lid Switch