Purely cosmetic. When the part where the shaft meeting the hosel is exposed it can look rather ugly, and it can also catch on things when being put into your bag again.
It is called the ferrule.
The Hosel (one 's') is the socket or neck in the head of a golf club into which the shaft is inserted.
Do you mean the piece that is between the head and the shaft? If so that is called the ferrule.
A ferrule is the little plastic thing directly above the head of a golf club. You may have meant to ask about the word "feral," which (with respect to animals) means a domectic animal that has become "wild" by living in the wild. Cats and pigs are good example of animals that often become feral.
A golf club.
The golf club located in Barnoldswick is Ghyll Golf Club. The phone number for the club is +44 1282 842466.
Augusta National Golf Club is located in Augusta, Georgia. It is a famous golf club.
See link below.
Royal County Down Golf Club was created in 1889.
Burntisland Golf Club was created in 1791.
It is a device used to hit a golf ball in the game of golf or it is a member club in the grounds of which golf is played.
Canterbury Golf Club was created in 1921.