Our 22 inch Cylinder Sonnets are made of powder coated steel and metal with a popular sentiment printed directly onto the tube. Adjustable striker. 7.5 inch Tube. Tube Reads, They remind us of people and things we hold dear. They bring us smiles, laughter, and sometimes tears. No matter what others may do or say, nothing will ever take these memories away. Memories are more than just a link to the past, sometimes they are re all we have that will last.