OREGON 91VXL057G 57 Drive Link Long Top Plate 3/8-Inch Low Profile Chain Recommended saw size: up to 42cc, bar length: up to 18" ( 46cm) 91vxl: 3/8" pitch, .050" gauge, low profile "x" grind-enhanced grind geometry significantly improves out-of-box sharpness with substantial speed improvement in boring and bias (undercut) modes Cutter top plates are 33-Percent longer than standard 91 cutters Warning: oregon 91vxl chains may be capable of kickback that could result in serious injury to the saw operator or bystanders