Professional chainsaw bar from Husqvarna. These solid chainsaw bars are machined from super-tough chrome-moly steel to give you excellent resistance to wear and chipping. The replaceable sprocket nose design fastens with a single rivet, and is securely held by wide, strong, overlapping ears. Noses can easily be replaced in the field. The patented sprocket design gives superior resistance to sprocket nose failures. Advanced oil hole and oil hole dam lubrication features increase oiling efficiency and retention with less oil hole plugging issues.