Check out the compression reading and interpretation down in the bottom part of the item description. Gosh, I suppose someone will believe it.....
http://cgi.ebay.com/Stihl-044-Chain...ryZ20538QQssPageNameZWDVWQQrdZ1QQcmdZViewItem
http://cgi.ebay.com/Stihl-044-Chain...ryZ20538QQssPageNameZWDVWQQrdZ1QQcmdZViewItem