The breadboard is made of ABS plastic, very durable to use. Each row and columns has corresponding letters and numbers, reduce the mistake handling. With tight plug-in contacts, the components will sit well after assembly and nothing will wobble. Self-adhesive back tape makes it easy to stick on a platform, like the prototype shield. Solderless breadboard is convenient for the prototypes and circuit design experiment and other DIY projects. Colour:As shown in color Material:ABS Size:8.5 x 5.5cm Package Contents: 10 * Test the welded board Only the above package content, other products are not included. 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.