HOODDEAL 5 pcs 6x8cm Double-side Prototype PCB Universal Printed Circuit Board Double sided PCB Prototype Board 6 x 8 cm Thickness : about1.6mm ; Hole Dia:about 1mm; Grid :about 0.1inch (2.54mm) You can keep them connected for larger projects or snap them to smaller sizes for medium or small projects FITS FOR LARGE, MEDIUM AND SMALL PROJECTS - You can keep them connected for larger projects or snap them to size for medium to small projects