Compatibility: suitable for all RYOBI 18V ONE+ batteries, battery and charger not included. Saw blade: 115mm saw blade diameter allows precise cuts in various materials for versatile applications. Compact design: handy cordless circular saw for flexible use on the construction site and in the workshop without cable binding. Model: R18CS115-0 from the ONE+ series offers wireless freedom and is part of the expandable 18V battery system. Power: 18 volt voltage ensures sufficient power for mobile sawing work in wood and other materials.