Here is 10 brand new 18 inch oregon chains. 20BPX072G. List $27.91 each.These chains are .325 pitch .050 gauge and 72 drive links.These chains fit midsize Husqvarna that use H23 and H22 chain and mid size Echo -20BPX72CQ is the same as 20BPX072G. Also fits Poulan, Sears, Shindaiwa with oregon chain would have a 20 or 33 stamped on the drive link. 20 series is the high performance choice for homeowners, arborists and commercial cutters.These are oregons newest low-kickback chains that meet ANSI low-kickback standard without compromising performance or cutting speed. These have blued micro chisel cutters for improved strength and corrosion resistance. X grind improves sharpness with substantial speed improvement and improvement in boring and under cutting.