It's a Univolt 2x4 Inches General Purpose Printed Circuit Zero Board. This is commonly known as Perf Board, Practice Board, General Purpose PCB, Zero Board. This Is A High-Quality Single-Sided Fr2 / Phenolic General Purpose PCB. It Is Used For Rapid Prototyping Design

Features 

• Size- 5x10cm (2x4 Inches)
• This Is A High-Quality Single-Sided Fr2 / Phenolic General Purpose PCB
• It Is Used For Rapid Prototyping Design
• Copper Layer Is Laminated For Easy Soldering And To Prevent Corrosion
• Widely Used For Electronic Projects.
• This is commonly known as Perf Board, Practice Board, General Purpose PCB, Zero Board.
• Model Number: Univolt Economy-42