Editorial Review Beadsmith Super-Lon (S-lon) Cord. Twisted Nylon. Durable Size #18. Warm Neutrals Mix. One Tube Of 4 Spools. The BeadSmith's Super-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 Warm Neutrals mix contains four different shades of lighter beiges with hints of peach, green and brown. 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: 4 spools in one tube