Choose a device:

construction, building

More specific:

Choose basic color of device:

redconstruction, building

blueconstruction, building

yellowconstruction, building

blackconstruction, building

whiteconstruction, building

Choose quantity:

qty:1 construction, building

qty:2 construction, building

Primary or secondary?

primary construction, building

secondary construction, building

Combined flag identification

by main colors

redblue+ other

by device on the flag

construction, building