Manufacturer: Twin Industries  •  RoHS/pb-free: RoHS   Pb-free  •  Series: 7100  •  Proto Board Type: Prepunched Insulating  •  Size / Dimension: 6.5" x 4.5" (165.1mm x 114.3mm)  •  Hole Diameter: 0.062" (1.57mm)  •  Circuit Pattern: 0.1" (2.54mm) Grid  •  Board Thickness: 0.062" (1.57mm)  •  Material: FR4 Fiberglass  •  Other PartNo: 438-1034