ITEM NAME:4 pcs 830 Tie Point PCB Solderless Breadboard for Arduino A9D7 4 pcs 830 Tie Point PCB Solderless Breadboard for Arduino A9D7 630 tie-point IC-circuit area plus two 100 tie-point distribution strips providing 4 power rails. ABS Material,Accepts a variety of wire sizes (20-29 AWG) 300V/3-5A,Coloured coordinates for easy component placement Works great with Arduino,Matching jumper, diameter 0.8mm Size: 6.5 x 2.2 x 0.3in 830 tie points total. 200 in 2 power rails, 630 in a 30 x 10 matrix White plastic, with black legend. Colored power rails Package include: 4x 830 tie point breadbaord Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.