Welcome to the store! 1. Low Usage, Low Cost PCB Kits: These PCB kits are designed for low usage and cost-effectiveness, offering convenience and flexibility for expansion. 2. Beginner-Friendly Double-Sided PCBs: The double-sided PCB boards are ideal for electronics beginners and soldering projects. 3. Versatile PCB Boards: With a variety of product types in this package, PCB boards in different sizes can be used in a wide range of applications. 4. Standard Hole Spacing: Featuring standard hole spacing and size, this design makes it more convenient for users to replace components. 5. Professional Design & Excellent Craftsmanship: This set of double-sided PCB boards is a perfect replacement for old PCB boards, thanks to its professional design and excellent workmanship. Item Type: PCB Board Kit Material: PCB PCB Board: Hole Spacing: Approx. 2.54mm / 0.10in Pin Header: Spacing: Approx. 2.54mm / 0.10in Pin Count: 40 Terminal: Rated Voltage: 300V Rated Current: 16A 5 x PCB Boards (2 x 8 cm) 5 x PCB Boards (3 x 7 cm) 5 x PCB Boards (4 x 6 cm) 5 x PCB Boards (5 x 7 cm) 10 x Male Connector 10 x Female Connector 10 x Terminal Your 100% satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!