700-Point Single-Bus Solderless Breadboard for Prototyping Electronic Circuits Model: PTT-700pt-BB Features: Easy to use for creating temporary prototypes and experimenting with circuit design Ea.31in (L*W*T) Screw Hole Size: 3 134 Screw Hole Pitch: 3cm/1 2 Material: ABS Plastic, Metal Color: White Weight: 67g / 2 36oz Hole Layout: Hole Configuration: 60 Rows & 12 Columns Hole Diameter(Approx): 1mm/ 0