Magical Conduit

Utility

Magical conduits make it easier to channel magical energy through a mage's body. In the days before magical conduits were invented, only people with exceptional constitutions were capable of using magic safely, and even then most of their spells were weaker than those cast by modern mages. Most mages start off using a very basic training conduit during their apprenticeship and create their own conduit afterward. Mages who don't create their own conduits are typically looked down upon. The exception to this is if someone's symbol of office is a magical conduit. (e.g. a priest's scepter) In these cases, the use of this conduit is acceptable as long as they're on business related to their office. Some conduits can also store spells, which can then be easily cast on command, even by someone who doesn't know how to use magic.
Mass-produced magical conduits are typically used by non-mages and as such manufacturers of these typically focus more on storage capacity than on channeling efficiency. These typically are sold with spells already in them and must be brought to a mage to be refilled after the spells inside are expended. Some of these are made to be disposed of after use instead of refilled. Disposable conduits are typically cheaper than refillable conduits.
It is possible to store more spells in a conduit than it is designed to hold. If this is done, the conduit becomes volatile, and is likely to explode, releasing the effects of all of the stored spells at once.

Manufacturing

Magical conduits are typically created from a preexisting object. There are no special requirements for an object to be able to be made into a conduit. Conduits are often something that's worn, like a glove, necklace, or circlet, but some mages have handheld conduits like a wand or a staff. A conduit can be almost anything, but these are the most common examples.