Answer:
The itsy bitsy teeny weeny yellow polka dot variety is quite popular.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
Iron roof, glass walls, burns and burns and never falls.
My first is in wield, sever bones and marrow. My second is in blade, forged in cold steel. My third is in arbalest, and also in arrows. My fourth is in power, plunged through a shield. My fifth is in honor, and also in vows My last will put an end to it all.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.
What is so fragile that saying its name breaks it?