Here is 4 brand new 20 inch Oregon chains 20BPX078G. List $31.13 each.These chains are .325 pitch .050 gauge and 78 drive links.These fit mid size Husqvarna, Poulan, Shindaiwa and Sears that use H78 chains.These are the same chains as Echo #20BPX78CQ. 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. It has 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.