Standard stripboard pattern, with tracks running the length of the board. Single-sided high-quality FR4 glass-epoxy circuit board. 1oz/ft2 pper with an anti-tarnish ating for easy soldering. Lead free and RoHS mpatible. 38 x 62 holes (38 strips), 0.037" holes are drilled on 0.1" (2.54mm) centers.