Husqvarna Guide Bar 20" X Tough RSN Large Mount for 3 8" P (1.5mm .058") Pallet1 six cutting height settings and Two side pockets and six cutting height settings and conveniently positioned controls allow the operator to quickly adapt the machine to changing mowing conditions thanks to the Crank Safe BBC System you can stop only the blade to empty the grass bag and continue to use the drive system to travel across pavements to get to your next patch of grass The Husqvarna X TOUGH RSN range of guide bars is designed for professional forestry and demanding chainsaw applications where durability Replacement sprocket nose available as a spare part