M73DPX066 18" 3/8 pitch .058 gauge 66 DL DuraCut HD chain

• Exceptional Durability as close to carbide as Oregon makes
• The heavy-duty version of 73DPX066G
• Increased durability for abrasive conditions: sandy areas, dirty wood, fire-damaged forests, and other challenging environments.
• Cuts up to 3x Longer*
• An advanced plating process applies multiple chrome layers for exceptional durability and stay-sharp
• New DuraCut Stays Sharp Longer than old MultiCut chain
• This M73DPX chain features easy to maintain, low-vibration, semi-chisel cutters that work fast.
• Stays sharp longer than full chisel when cutting muddy logs or cutting stumps at ground level.
• These cutters are designed to be more tolerant of sharpening errors than full chisel cutters. 
• LubriTec keeps your chain and guide bar oiled for less friction and longer life
• Blued Cutters deliver high-quality protection against corrosion
• Top-Plate Filing Indicators make accurate sharpening easier
• Exclusive OCS-01 Steel provides greater durability
• For saw sizes 50-100 cc
• Sharpens at 30 degrees with 7/32" file (part#_70502_)
• Maintain depth gauge at .025 clearance

If you have a 73, A2, 77 ( (54, 48, 42, 81, or 48) stamped on your drive link, and there are 66 drive links on the current chain or bar info (3/8 058 66DL) is matched, then this chain will fit your saw.