Thickness: about 1.6mm
Hole-pitch: 2.54 mm/ 0.1 inches
Hole-diameter: 1 mm/ 0.04 inches

2 X 8CM (20mm x 80mm) double-sided PCB board with 168 holes
3X7CM (30mm x 70mm) double-sided PCB board with 240 holes
4X6CM (40mm x 60mm) double-sided PCB board with 280 holes
5X7CM (50mm x 70mm) double-sided PCB board with 432 holes
7 X 9CM (70mm x 90mm) double-sided PCB board with 806 holes

as found here:
ELEGOO 32 Pcs Double Sided PCB Board Prototype Kit for DIY Soldering with 5 Sizes Compatible with Arduino Kits https://a.co/d/h4oqrbP