Husqvarna 531300443 18-Inch H80-68 (72V) Saw Chain, 3/8-Inch by .050-Inch For Models 55 Rancher, 257, 261, 262XP, 357XP, 359 and 455 Rancher 3/8-Inch Pitch .050-Inch Gauge Ideal for professional users in demanding conditions High-performance, low vibration chain