Is that the same as RSLK, because I could not find just plain RSL. I hope so, because I have a roll but have not tried it yet.
RSK- is the Classic or ''Klassic'' cutter design with a slimmer raker/depth gauge.
RS- Is the newer design (not brand new just newer) with the different raker/depth gauge design, it has a little fat belly that gives lower vibes.
From my experiences I've found that the RSK is a hair faster than RS when talking round ground.
Add the ''L'' to either & you obviously have your square ground, although I can't find RSL, only RSLK when talking full comp.
Also Stihls site shows a couple of the RSK's as having the bigger RS raker in there pics but it is wrong, if you look at the second picture on these pages it will show the correct design. As i mentioned, they also don't list RSL, which is wired because I swear I've run it before. The only RSL I can find now is in full skip (RSLF) & in .404. This site is pretty misleading & there are a bunch of picture discrepancies throughout all the chains, square or round.
They show these two pics as RSLK
Both pics are pulled from the RSLK page.
The top pic resembles what should be RSL, it does not have a listing but shows on the RSLK page as it's stock photo. Bottom Pic is the second pic on the page & is the correct representation. Go check out the pages, you'll see what in talking about.
Mike, if you have square but haven't tired it yet, be prepared to invest in some expensive files. Save Edge & Preferred make some but that's the easy part, I trashed more than one loop trying to learn how to file it right & I can file round with my eyes closed & my hands tied behind my back.. LOL. Defiantly a learning experience.