Final answer:
Compression fittings are made for various sizes of tubing and the size depends on the specific application. They are commonly used in plumbing and fluid systems to create a tight seal between two pieces of tubing.
Step-by-step explanation:
Compression fittings are made for various sizes of tubing. The size of the fitting depends on the specific application and the size of the tubing it is designed to connect. Compression fittings are commonly used in plumbing and fluid systems to create a tight seal between two pieces of tubing.