PHB pg. 259
Mending
0-level (Cantrip) Transmutation
Ritual - does not require spell slot, takes 10 minutes longer
Casting Time: 1 Minute
Range/Area: Touch
Components: V, S, M
Materials: Two lodestones
Duration: Instantaneous
This spell repairs a single break or tear in an object you touch, such as a broken chain link, two halves of a broken key, a torn cloak, or a leaking wineskin. As long as the break or tear is no larger than 1 foot in any dimension, you mend it, leaving no trace of the former damage.
This spell can physically repair a magic item or construct, but can't restore magic to such an object.
At higher levels: The range of the spell becomes 10 feet once you reach 5th level. At 11th level, its casting time becomes 1 action. At 17th level, its duration becomes 1 minute, and you can repeat the effects on another break or tear in the same object as a bonus action for that duration.
Available for: Artificer, Bard, Cleric, Druid, Sorcerer, Wizard