One of the advantages of nylon strings is that they have much less tendency to break than those made from gut; and in normal use a breakage is quite unusual. But they will sometimes occur, especially when a new player is first getting used to the instrument (tightening an adjacent peg while trying to tune a string is the most common cause of breakage.)
Harps are designed to withstand a particular tension, and it is essential that any replacement strings fitted to an instrument are of the same material and diameter as the originals, otherwise it is possible to cause serious damage to your harp. Our high-quality nylon strings come from two separate sources in the USA; and we are happy to give our harp customers the contact details of these suppliers, in case they prefer to buy spare sets or replacements direct. Otherwise, you can buy your strings from us.
We can normally supply replacements immediately, from stock; but occasionally we will have to order one specially from the supplier. This can take time, and our string-makers strongly recommend that professional players, or anyone who may need a string at short notice, keep a full spare set of strings for their instrument.
The upper, or monofilament (plain, single-strand) nylon strings are normally supplied in a length of about 30”, which for the shortest strings will be enough to give two or even three replacements.