This double breadboard is pretty qualified and practical product for laboratory and workshop usage. This product contains 2 pieces of 60 row breadboard, 4 power section and it has a metal covering at the bottom of it. There are also 4 inputs for ground connections and power inpunts on it.
All of it's pins are compitable with standard headers (2.54mm). It is seperated into two pieces of 5 rows for DIP covered microcontrollers. It also has proper holes for 29-20AWG wires.