The Peerless is a bargain but they need to check the specs on the saw. Pretty sure that ain't no Stihl!
I picked up this sharpener off c-list this last week, couldn't see in the sellers pic that one hinge point had been broke at one time or another, but had a very good repair done to it, it cleaned up nicely and it has the reversible motor like my other one, now I can use one with a 1/8" wheel and one with a 3/16" wheel, so no need to swap wheels any more, got it for 65. clams.......