ECHO 72LPX Replacement Chain ECHO's 72LPX replacement chain follows a standard sequence designed with professional loggers and forest workers in mind. Features Its full chisel cutters with an offset depth gauge prevent cutters from driving into the sidewall, resulting in a smoother cut Provides excellent power and precision Has specially coated cutters that provide extended protection for corrosion resistance The top plate filing indicators make sharpening easier Specs Gauge: 0.050" Pitch: 3/8" File size: 7/32" Cutter type: Standard Sequence Compatibility The 16" length (MPN: 72LPX60CQ) is compatible with 16D0PS3860C bar and CS-620P, CS-620PW and CS-680 (60 drive links) The 18" length (MPN: 72LPX64CQ) is compatible with 18D0AS3864C bar and CS-590 (64 drive links) The 20" length (MPN: 72LPX70CQ) is compatible with 20D0AS3870C and 20D0PS3870C bars and CS-590, CS-620P, CS-620PW and CS-580 (70 drive links) The 24" length (MPN: 72LPX81CQ) is compatible with 24D0PS3881C bar and CS-590, CS-620P, CS-620PW, CS-680 and CS-800P (81 drive links) The 27" length (MPN: 72LPX93CQ) is compatible with 27D0PS3893C and 28H0PS3893C bars and CS-620P, CS-620PW, CS-680, CS-7310P, CS-7310PW and CS-800P (93 drive links) The 32" length (MPN: 72LPX105CQ) is compatible with 32DOPS3805C and 32H0PS3805C bars and CS-7310P, CS-7310PW and CS-800P (105 drive links) The 36" length (MPN: 72LPX116CQ is compatible with 36D0PS3816C bar and CS-800P (116 drive links)