Husqvarna 531308147 16-Inch 90SG-56 Lo-Pro Saw Chain, 3/8-Inch by .043-Inch For Micro Lite Bar 137 and 142 (after Serial # 200621000001) and 240 Models 3/8-Inch Pitch .043-Inch Gauge Ideal for professional users in demanding conditions High-performance, low vibration chain