Ladders Galore

I have a series of 12 ladders to give away.
Each one is incrementally longer than the next.
The first one is 4 metres long and the last one is 8 metres long.
I prefer to keep the swarm of ladders together otherwise the queen ladder will fly away and start a new colony and the next thing you know we've got ladders all over the show.
Despite being free, I wont give them to anyone who can't bring themselves to give me a hug.