Oregon 541656 16" PowerSharp Starter Kit 3 Count PowerSharp starter kit. Starter kit includes: the PowerSharp Chain&#44; PowerSharp Guide Bar&#44; and the Bar-Mount Sharpener.. PowerSharp guide bar has the alignment and latch pin holes required for use with the bar-mount sharpener. Fits 16 Craftsman&#44; Poulan and Homelite chainsaw models.