Ltvystore 5Pack Transparent Solderless Plug-in Breadboard Protoboard with Adhesive Tape,400 Tie-points, 2 Power Lanes,1 Double-strip Circuit PCB Test Breadboard 400 tie points total: 300 tie-point IC-circuit area plus two 50 tie-point distribution strips providing 4 power rails. 300V/3-5A,Coloured coordinates for easy component placement Plastic housing, metal contact clips; Accept wire with diameter 20-29AWG Size: 3.3 x 2.1 x 0.3in (84 x 54.3 x 8.5mm) Perfect for Arduino Shield Prototyping and Testing