The BeadSmith's Super-Lon, also known as S-Lon, is a twisted nylon multi-filament cord in an extra-heavy #18 size. It's ideal for stringing, bead crochet and micro-macramé jewelry! This Summer Color Mix contains: Light Khaki, Khaki, Sand, Light Brown, Bronze, Chartreuse, Cocoa, Olive, Brown, Pastel Mint Green, Green and Evergreen. Each color comes on a thread bobbin, ready to use! Measurements: The threads are 0.5mm thick. Each spool has 77 yards of thread. Quantity: 12 spools per pack.