The bosch gsa 18 v li compact professional 18v sabre saw is a compact powerhouse with low vibration this ergonomic and powerful professional cordless sabre saw takes advantage of the bosch 18v li ion system both electronic motor protection emp and bosch electronic cell protection ecp keeps your tool and batteries safe from burn out during heavy applications with the sds quick change system for fast easy accessory changes and 2 stage speed setting for different materials the gsa 18 v li a