he GKS 18V-57G offers a very respectable 57mm maximum depth of cut at 90 - thats an extra 6mm deeper than its sister model, the GKS 18 V-LI. This model includes an upgraded baseplate, which means this tool is compatible with the Bosch FSN Guiderail system for a more accurate job. FEATURES Performance - a fast sawing rate and long runtime thanks to powerful motor and 5.0 Ah batteries (sold separately) Flexibility and precision - using the guide rail allows for fast, precise work results (sold separately) Robust design - developed for every type of application on the jobsite, even on a roof or scaffold Base plate also compatible with other common guide rail systems