• Fits Chainsaw models: 440, 440e, 445, 450, 450e, 550XP, 550XP Trio, 550XPG, 545
• Husqvarna’s X-Cut chain is ready to supercharge your homeowner or professional chainsaw cutting work
• Fits select 18 in. chainsaw bars from Husqvarna
• Sharpness straight out of the box that lasts longer before needing to be sharpened
• High durability thanks to a precisely balanced combination of materials and manufacturing processes