Here is one brand new 20 inch Oregon chain. 21BPX076G. This chain is .325 pitch .058 gauge and 76 drive links.This Oregon chain replaces the stock Chinese chain part# 52209 on Blue max 8901 and 8902 models. 20 series is the high performance choice for homeowners, arborists and commercial cutters.This is oregons newest low-kickback chain that meets 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.We also have the Oregon Professional full chisel Part# 21LPX076G.