The Oregon 571037 PowerSharp 18 In. replacement saw chain is a low profile chain with a 3/8 In. pitch, 0.050 In. gauge and a sharpening stone designed specifically for the CS1500 corded electric chainsaw. The chain 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.