String: 80lb Tan Chime String - 20 feet
This product includes 20 feet of tan 80 gauge braided Terylene string to be used with chime tops that measure 3.75, 5.25 or 7 inches in diameter. Please choose the string gauge appropriate to your chime top dimensions. Either black or tan colored string can be used.
Here's where you can find chime stringing instructions, along with a how-to video.
I contacted woodstock chimes as one of my chimes has loose strings. I have all the pieces for repair including string and said so. I asked if there was a tutorial or workshop for help to get it restrung. The response I got was, "All I can do is send you string." I received the pack of string that now sits next to my unstrung chimes. Surely this has been an issue for other people. Youtube will probably be more helpful.