The Efco sharpener for chainsaw chains allows accurate and precisely tapered grinding for perfect maintenance of your chainsaw. Prolonged use of the chainsaw will frequently result in rounding of the cutter teeth, mainly due to the presence of abrasive components in wood, dust and grit. Thanks to the chain sharpener you can restore the cutting edge of the chain teeth in just 5 seconds without requiring any additional equipment. This tool is extremely easy to use: simply attach the sharpening stone device onto the guide bar and run the chain at maximum speed, pressing hard against the device for several seconds. For complete replacement of the chain refer to the chains and chain rolls sections.