Stihl 36RDR72 Carbide chain designed for their Rescue saw used by fire departments, the most aggressive. It says on your bar what the gauge is, if you can't read I'm. Part number 3944 005 0072. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Chainsaw Parts". The seller is "ci_fan" and is located in this country: US. This item can be shipped to United States.