Oregon 541655 16-Inch PowerSharp Starter Kit for Stihl, Olympyk, Oleo-Mac Chain Saws Fits Stihl, Olympyk, Oleo-Mac Chain Saws This 16 in. Starter Kit contains the PowerSharp bar and chain, and the unique sharpening attachment with stone designed to sharpen your chain in seconds Precision saw chain sharpening system works quickly and accurately Sharpens a dull chain in 3-5 seconds Contains PowerSharp 539456 bar and PowerSharp PS55 chain