"HEAVY DUTY, ALL PURPOSE; EXCELLENT FOR USE IN MINES, LUMBERYARDS, FORESTRY, AND MARINE; HEAT TREATED ALLOY STEEL GEARING WHICH CAN BE EXTERNALLY LUBRICATED WITHOUT DISASSEMBLING TOOL; SPROCKET NOSE GUIDE BAR FOR GREATER CUTTING EFFICIENCY AND EXTENDED CHAIN LIFE; WEIGHT 12 POUNDS; TRIGGER TYPE THROTTLE BUILT INTDO HANDLE GRIP; REPLACEMENT CHAIN NUMBER 91053; REPLACEMENT GUIDE BAR NUMBER 90526"