lego duplo fence adapter blocks

Lego duplo blocks with fence connector.
Small blocks with 2 pins provide fence connector in male or female. A connected fence will still fit to raster on build plate.
Big block with 4 pins provide fence connector in male or female. They can be used to extend the fence outside of the build plate. A connected fence will not fit to raster on build plate based on connection between two pins.
Blocks fit to every other duplo block.