ORIGINAL: ChopperMike
They're plastic, as -pkh- said, because it's cheap to make and also so it can be snapped onto your TX's handle so it's always handy. I lost mine a while ago and use a small jewelers screwdriver to adjust it.
Regards,
Mike
So that's where you're supposed to snap it onto! I knew it was made to snap onto something, but didn't know what it would fit onto!