The Oregon R55 AdvanceCut™ Saw Chain is ideal for landscapers and homeowners using small, low powered saws, because it offers higher chain efficiency. The .043" gauge narrow kerf cutting systems increase efficiency since they need less power from the saw than standard cutting systems. This chain fits several Stihl models Designed for homeowners and landscapers, the low-vibration, low kickback Chamfer Chisel cutters offer outstanding performance - For chainsaw models that run 3/8 Inch low-profile pitch, .043 Inch (1.1 mm) gauge, 55 drive links Fits these chainsaw models: Stihl - 017, 018, 019, E 140, MS 170, MS 171, MS 180 C, MS 180 C-B, MS 180 C-BE, MS 180 G, MS 191 T, MS 192 C, MS 192 C-E, MS 192 T, MS 192 T C-E, MSE 140, MSE 140 C and more Precision, heat-treated semi-chisel chain cuts smoothly with a higher tolerance for debris Built-in Lubri-Tec automatic oiling system extends the life of your chain by delivering oil to key parts of the chain so you can work smarter with less downtime and maintenance Tough, long-lasting chrome outer layer and hardened rivets help reduce wear and allow for fewer chain adjustments For saw sizes up to 42 cc Series Name: R55 Fits Bar Length (Inches): 16 Gauge (Inches): 0.043 Low-Kickback Chain: Yes Number of Drive Links: 55 Package Quantity: 1 Pitch: 3/8-in Warranty: Limited lifetime Replaces OEM Part Number: Stihl - 61PMM355E; Husqvarna - H38-55 CA Residents: Prop 65 Warning(s): Yes UNSPSC: 27112700