The Oregon PowerNow 548179 Replacement Saw Chain, PowerSharp 14-inch (includes sharpening stone for PowerNow chainsaw) is a low profile chain with a 3/8-inch pitch and .050-inch (1.3mm) gauge chain, with a sharpening stone designed specifically for the PowerNow chainsaw. The 548179 Replacement Saw Chain (and sharpening stone) features top-sharpening cutters with depth gauge tie straps and guidance drive links for low-kickback performance, good chip flow, and smooth cutting action. The top-sharpening design allows the cutters to be sharpened on the saw, on the job, in seconds. The chisel-style cutters deliver efficient cutting and excellent stay-sharp. Ramped depth gauges and ramped guidance drive links deliver smooth cutting action and low-kickback performance. Meets low-kickback standards per ANSI B175.1 & CSA Z62.3. (IMPORTANT: Designed to be used only with the Oregon PowerNow chainsaw.)