577180501 Factory replacement new saw chain loop fits Craftsman 3.7 cubic inch sears model chainsaw with 20" bars This Replacement chain is 3/8 pitch, .050 gauge, and 70 drive link Oregon's 72V factory replacement Saw Chain is a 3/8" pitch chain that is ideal for homeowners and occasional chainsaw use. Low-vibration full-chisel cutters offer reliable performance. Vanguard - Oregon's unique bent-over depth gauges provide smooth cutting and low kickback. LubriTec keeps your chain and guide bar oiled for less friction and longer life Top-Plate Filing Indicators make accurate sharpening easier Exclusive OCS-01 Steel provides greater durability For saw sizes 50-100 cc Compatible fit with D70 chains Fits -20"bars on 35145, 35212, 35483, 35608, 35609, 35690, 35721, 35727, 35728, 35826, 35829, 35851, 35881, 35885, 35887, 35889 This saw chain met the kickback performance requirement of ANSI B175.1-2012 when tested according to the provisions of ANSI B175.1-2012. Low-kickback saw chain meets the kickback performance requirement of CSA Standard Z62.3. If you have a 72, 76, A1 ( 46, 47, 51 or 80 in Husqvarna) stamped on your drive link, and there are 70 drive links (check bar info also) this chain will fit your saw. Product Type Saw Chain Prop 65 Description WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov