The Oregon PowerNow 571037 Replacement Saw Chain, PowerSharp 18 in. (includes sharpening stone for PowerNow chainsaw) is a low profile chain with a 3/8 in. pitch and 0.050 in. (1.3 mm) gauge chain, with a sharpening stone designed specifically for the PowerNow chainsaw.

• • Top-sharpening design allows the cutters to be sharpened in seconds on the saw, pull the PowerSharp lever on the PowerNow chainsaw for 3-5 seconds 
  • 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

WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov