Color:Red + blue + black + white + green + yellow A terminal strip: Tie-point 170,Accepts a variety of wire sizes Material:ABS Features With 170 tie points With self-adhesive tape on the back. ​ Convenient and Easy-to-use: Solderless breadboard is convenient for the prototypes and circuit design experiment and other DIY projects. Each row and columns has corresponding letters and numbers. Self-adhesive back tape makes it easy to stick on a platform. With tight plug-in contacts, the components will sit well after assembly therefore there are no wobbles. Jumper wires are easy to insert into or remove from these breadboards.