STIHL 61PMMC3-44 Oilomatic Picco Micro Mini Comfort 12-Inch Saw Chain, 3/8-Inch Pitch, .043-Inch Gauge, 44 Drive Lengths 3/8-Inch picco chain 44 Drive lengths Reinforced cutter geometry which is 0.1 millimeter thicker than the 61 Picco micro narrow chain Lower vibration levels combined with higher cutting Has boring efficiency while maintaining a low kickback