WB-108+J Solderless Breadboard with Jumpers (WB-108+J) Four (4) Terminal Strips with a total of 2520 contact points Seven(7) distribution strips with a total of 700 contact points Four(4) Binding Posts - ABS plastic material - Reusable 100's of times Black annodized aluminum groundplane integrated into the design ( 207mm x 235mm x 1.5mm) Jumper wires may be from 20 awg to 29 awg - Up to 300V and 5 A