Examples: Tapers usually will only increase the size of a piercing by 2 gauges. The taper is inserted into the hole and gently stretches the piercing to allow a larger piece of jewelry to be put in its place. Tapers can be made of surgical stainless steel, bone or other piercing-safe materials.

Elsewhere on the Web:

Examples of Tapers
You can purchase tapers from The Chain Gang, an online body jewelry store.