A sharp chainsaw is easier to use, doesn't drag, gives a cleaner cut, and is safer to use. This Kit restores a sharp new cutting edge to the cutters, with no need to remove the chain from the saw. Kit also includes Depth Gauge and Flat File in order to maintain the right cutter-to-depth-guide height. (Essential for correct chain saw operation).* 4.8mm (3/16") size* For chainsaws with a pitch of 0.325"* Full step-by-step instructions included* Fits popular makes, including: Black & Decker, Bosch, Champion, Husqvarna, McCulloch, Partner, Performance Power, Poulain, Remington, Ryobi, Sovereign, Stihl and others* Great quality item.