ITEM NAME:4pcs Double-Side Prototype FR-4 PCB Stripboard Universal Printed Circuit Bo I4Y3 4pcs Double-Side Prototype FR-4 PCB Stripboard Universal Printed Circuit Bo I4Y3 Grid : 0.1" (2.54mm). Thickness : 1.6mm. Hole diameter : 0.9mm. Hole spacing: 2.54mm (100mil) (mm) Material : FR-4 (glass fiber). All holes are plated through. Both sides are identical. Dimension W x L (mm) Dimension W x L (inch) Hole (column x row) 40mm x 60mm1.6" x 2.4"14 x 20 Package included:100% Brand New,1x Double-Side Prototype PCB Universal Board (As your choose) Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm..Hole spacing: 2.54mm (100mil) (mm). Both sides are identical.