The cut is usually boned, rolled and cut into two joints, or minced, or sold as chops.
But, it can also be sold as a whole, and with bone-in. It may or may not be sold rindless.
A whole one will weigh about 6 pounds (2.75 kg), and is good for braising or simmering.
The lower end of the collar area is called “end of collar.” It will weigh about 2 ¼ pounds (1 kg.) It is cheaper.
Some recommend soaking any part of the collar in water first overnight or for several hours first. Then, you drain it, discard the water, and braise in fresh water, or use in casseroles or stews.
Sometimes called “prime collar bacon.”