Oregon PS44 12-Inch PowerSharp Saw Chain and Stone for PowerSharp Bar Fits Stihl, Olympyk, Oleo-Mac Chain Saws Replacement Chain and Sharpening Stone for PowerSharp Starter Kit 553819 Chain Pitch (in.): 3/8 low profile, Chain Gauge (in.): 0.050, Chain Type: PowerSharp, Drive Links (qty.): 44 The diamond-coated dresser link resurfaces the stone, ensuring flat cutter to stone contact As the chain moves through the bar-mount sharpener, the unique top-sharpening cutters contact the stone