also known as Part # 576817201, 72V070XN, 72V070X or 72V070G. List $28.92 each. This chain is vanguard ANSI low-kickback chain. The shape of speed, performance and safety make vanguard a chain for professional, commercial or occasional users that desire added safety from patented bent over depth gauges OSC-01 steel provides greater durability in cold cutting conditions. The top of the tooth have the witness file marks stamped on them- no more guessing at the angle. We buy in volume and pass on the savings to you.These chains fit the most of the 20 inch larger Poulan-older models and 5020 model that call for 585889914. 576817201 (72V070XN) , Replaces PP5020AV part #577180501 which is the same chain as this in different package. Also fits Echo, Homelite and Mcculloch older models. Bar code starts 200 which means 20 inch .050 gauge. This chain is 3/8 pitch .050 gauge and 70 drive links. If you have a 72 A1 stamped on your drive link and there is 70 drive links these will fit your saw.