An attractive type of bar (6)
I believe the answer is:
magnet
'an attractive type' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for magnet that I've seen before include "Attractive body" , "The piece of iron is attractive" , "Drawing influence?" , "Device that attracts objects containing iron" , "it could be a draw?" .)