Answer:
A device for finding furniture in the dark.
What can you catch but not throw?
I'm very tempting, so its said, I have a shiny coat of red, and my flesh is white beneath. I smell so sweet, taste good to eat, and help to guard your teeth.
It can pierce the best armor and make swords crumble with a rub, yet for all its power It can't harm a wooden club.
What can run but canβt walk?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?