The Echo Timber Wolf 20 Inch Chainsaw Guide Bar #20DOAS3870C is a high-quality replacement guide bar designed for Echo brand chainsaws, specifically compatible with the ECHO CS-590 model. Made of durable metal and steel, this silver guide bar is 20 inches in length and has a 3/8" .050 70DL chain size. It is suitable for gasoline-powered 2-stroke engines and comes as a single piece, requiring assembly. This guide bar is a new and reliable option for maintaining and improving the performance of your chainsaw.