The word you're probably looking for is "grommet"; you might want to look it up and see if that's what you meant or not.
jump rings
The rings on a barrel are called "hoops." They are typically made of metal or wood and serve to hold the staves (the wooden slats that make up the barrel) together, maintaining the barrel's shape and integrity. Hoops also help prevent leaks and enhance the barrel's durability.
Probably the same people who make the pencils.
steel towers
The individuals who carry or hold the flag in a war are commonly referred to as "flag bearers" or "standard bearers." Their role is significant as they represent their unit or nation, often serving as a rallying point for troops during battle. The flag is a symbol of pride and morale, making the flag bearer a key figure in maintaining the spirit of the soldiers.
The proper way to hold an American Flag is over the shoulder or in the air, but not touching the ground.
transmission line tower
The metal support used in a fireplace is called a "fireplace grate." It is placed inside the fireplace to hold logs and allow airflow for a better burning fire.
No. It does not have enough gravity to "hold" onto rings, let alone a moon.
Tend the flag means to hold the flag stick and attend to the flag in golf. You will remove the flag pole after a stroke has been made by a player.
to hold up a flag so it wont fly away
TO give Britain a flag to hold