Features 1、This set of PCB sets requires low usage, low cost, and it is convenient to use and of flexible expansion. 2、The double side PCB board is suitable for beginners in electronics and soldering projects. 3、With many types of products in this package, and PCB boards of different sizes can be used in a variety of environments. 4、Using standard hole spacing and hole size, this design is more convenient for users to replace parts. 5、Professional design and superb workmanship make this set of double side PCB boards a perfect replacement for old PCB boards. Specification Item Type: PCB Board Kit Material: PCB PCB Board: Hole Spacing: Approx. 2.54mm/0.10in Header Connector: Spacing: Approx. 2.54mm/0.10in Pin Number: 40 Terminal: Rated Current: 16A Package List 5 x PCB Board(2 x 8cm) 5 x PCB Board(3 x 7cm) 5 x PCB Board(4 x 6cm) 5 x PCB Board(5 x 7cm) 10 x Male Connector 10 x Female Connector 10 x Terminal