The Senix 20 Volt Max* cordless brushless chainsaw features a 10-inch bar and chain with 8 m/s chain speed for smooth cutting. The tool-less chain tensioning system allows the user to easily keep the chain properly adjusted. The auto oiler provides continuous lubrication to the bar and chain to ensure high performance and trouble-free cutting. The chain brake stops the chain in the event of kickback to provide an extra measure of safety to the operator. Senix 20V Max* batteries (2) and CHX2 2 Amp charger. Battery and charger are included.