Product Include: 3 pack 18 Inch Chainsaw Chain .325" Pitch .050" Gauge 72 Drive Links, semi-chisel. This saw chain met the kickback performance requirement of ANSI Standards Our 18 inch chainsaw chain fits several models, including Husqvarna 240, 350, 435, 445, 450 and 455 Rancher, Jonsered CS2240 and CS2250S and more. Replaces Husqvarna parts 581643672, H30-72, and SP33G-72 Features: In the process of chain production, after many heat treatment, quenching, so that the strength and toughness of the connecting piece/rivet is enhanced, wear resistance, will not break Find your chain: Please check the product description for compatible models, or you can also contact us with your chainsaw/bar specifications and we will try our best to find the right chain for you After-Sales: If you have any questions about using the product, you can mail us at any time, and we will give you a satisfactory service HAOYOO Chainsaw Chain