STIHL 61PMMC3-55 Oilomatic Picco Micro Mini Comfort 16-Inch Saw Chain, 3/8-Inch Pitch, .043-Inch Gauge, 55 Drive Lengths Fits Only 16 Inch Bar (MS170 and MS180 ONLY), Stihl Chainsaw Models 017, MS170, MS180 Genuine Stihl Chainsaw Chain Please Check Your Stihl Bar to Verify Correct Chain 16-Inch, 3/8-Inch Pitch, .043-Inch GaugeHas boring efficiency while maintaining a low kickback