This is your tried and true full-size solderless breadboard! It has 2 split power buses, 10 columns, - with a total of 400 ties in point. Specifications: 2 bus strips (distribution strips) 1 Terminal Strip 400 total contact points ABS plastic Accepts wire sizes from 20-29AWG 400 Tie Point Interlocking Solderless Breadboard for ATMEGA PIC For Arduino UNO Product Features: 400 tie points total. 100 in 2 power rails, 300 in a 30 x 10 matrix Transparent plastic, with black legend. Colored power rails For wires 21 to 26 AWG 2-sided peelable adhesive tape