Description: Great for building a prototype of an electronic circuit With referencing numbers printed on both sides for easy reference of individual holes Each unit will accept transistors, diodes, LEDS, resistors, capacitors and virtually all types of components Size(LxWxT): Approx. 150 x 90 x 1.2mm Material: Single Side Bakelite Weldwood Hole Diameter: Approx. 1mm Hole Pitch: Approx. 2.54mm (center to center) Hole Number: 1440 Package Includes: 1x PCB board