http://powersharp.com/lookups/selguide.aspx?busid=pwrshrp&sellreg=namer&langid=eng
This video covers my experience with the PowerSharp starter kit.
Quick to install, easy to sharpen and effective.
Go to the above link and input your chainsaw make, model and blade length in the pull down menus. This will tell you the proper starter kit to fit your saw.
Go to www.powersharp.com for countries other than USA