The "classic" reels for 
 carp fishing will be 
 front drag reels, the less powerful rear drag carp reel is reserved for less powerful fishing such as 
match. The 
spools of the 
front drag reels are mostly "Big Pit", which means "long distance", ie with diameter and oversized capacity. This is appreciable but not essential, especially if you want a reel for a short carp rod. But in other cases take a long distance carp reel is the norm: he who can do more can do less.