Here is one brand new 18 inch Oregon professional chain. 21LPX072G. Sale $19.99 & Free shipping. List $27.79.This chain is .325 pitch .058 gauge and 72 drive links. NOTE - This chain will not fit in a .050 gauge bar. 20 series is the high performance choice for homeowners, arborists and commercial cutters.This is Oregons newest High performance top performing .325 chain. It has blued square corner chisel cutters for faster cutting, improved strength and corrosion resistance. X grind improves sharpness with substantial speed improvement and improvement in boring and under cutting. (We also have the anti-kick micro chisel in this size 21BPX072G).