Husqvarna 531300445 16-Inch HL180-56 Lo-Pro Chain Saw Bar 3/8-Inch by .050-Inch Fits: 136, 137, 141, 142, 240, 335 XPT, 338 XPT and T435 (Fits models 137 & 142 BEFORE Serial Number 2006100001) 3/8-Inch Pitch .050-Inch Gauge Ideal for professional users in demanding conditions High-performance, low vibration chain