Disc Swing PRICE $25.95 Hang From a Tree or Your Swing Set! This disc swing features a 12" diameter rotomolded disc which is larger and stronger than a "daisy-disc" swing. Disc comes in four colors to match your swingset. 3/4" easy-to-grip diameter nylon rope is extra thick and soft. Standard rope length is 12 ft (enough for an 8' high support with 3 middle knots and knots on each end). Extra rope length can be added for $1/foot.