Product Name: PCB Board
Pin Number: 90
Hole Pitch: 2.54mm
Total Size: 20 x 30cm/7.9" x 11.8"(L*W)
Mounting Hole Dia.: 2.54mm/0.1"
Thickness: 1.6mm/0.047"
Materials: PCB, Plastic, Glass Fiber
Main Color: ​Green
Weight: ​730g

Great for building a prototype of an electronic circuit.
With referencing letters printed on one side for easy reference of individual holes.