The SKIL 35cm chain saw chain is the only chain recommended for use with the SKIL 2x20V (40V MAX) Brushless 35cm Chain Saw (CS4556E-00 models). The replacement chain is manufactured by OREGON® (90PX052X), and is a component of OREGON's Micro-Lite Narrow-Kerf cutting system. The low-kickback design enhances user safety, and the lightweight construction enhances user comfort.