The Re015-Lf Is A 40.5 X 40Mm Dil-Labcard Dual Inline Prototyping Board, Made Of 1.5Mm Epoxy Fibreglass And 35Μm Cu Single-Sided Construction With Solder Stop Mask Surface. This Hot Air Levelling Prototyping Board Comes With 14 X 14 2 X 2Mm Soldering Pads.