Up to 50% faster and versatile cordless solution for cutting and removal applications with corded performance.REDLINK overload protection.12 variable speed settings from 12,000 - 18,000 orbits per minute and 3.4 oscillation movement allows quick completion of professional applications into materials such as metal, wood and plastic.Productivity enhancing FIXTEC tool free blade change with universal blade change adaptor included to accept all competitor blades.REDLITHIUM-ION battery pack delivers up to 2x more run time, up to 20% more power, up to 2x more battery life and operates better down to -20C than other lithium-ion technologies.Unique cutting depth stop adaptor to prevent over-cutting in material.Unique dust extraction kit to keep the work space dust-free when connected to an AC or DC extraction system.Brightest LED workspace illumination.Flexible battery system: works with all Milwaukee M18 batteries.M18BMT-0Body Only - supplied without batteries or chargerM18BMT-421C comes with:1x4.0Ah Battery, 1x2.0Ah Battery, Charger