Feature: 1. Compatibility: Designed to fit for CS 440 CS 4400 303T chainsaws replace for WT 416 1 WT 416C 12300039330 12300039332 12300039333, ensuring a perfect fit and optimum performance. Compatible: for CS 440 CS 4400 303T Chainsaws Replace for WT 416 1 WT 416C 12300039330 12300039332 12300039333.