The 2898-22 M18™ FUEL™ cordless 2-tool combo kit includes the M18™ FUEL™ 1/2 in hammer drill/driver (2704-20) and the M18™ FUEL™ metal cutting circular Saw. M18™ FUEL™ features a POWERSTATE™ brushless motor REDLINK™ PLUS™ electronic intelligence and REDLITHIUM™ battery technology, this results in longer motor life, more runtime and more power. The POWERSTATE™ brushless motor works harder and lives longer than all leading competitors, while reducing noise and cooling more rapidly to deliver years of maintenance free performance. The Milwaukee® REDLITHIUM™ XC5 battery is the most durable pack on the market and provides up to 2X more runtime than standard Lithium-Ion batteries. Redlink plus intelligence hardware and software is the worlds most advanced system of cordless power tool electronics that will maximize performance and protect the users investment.