The dewalt dcs355m1 xr oscillating tool is fitted with a brushless motor that delivers up to 57 more run time over brushed motors and the quick change accessory system that allows blades and attachments to be changed quickly without the use of tools there is also a depth control straight cut guide that increases cutting accuracy for detailed work the tool has a dual grip variable speed trigger for more speed control even in tough applications there is a bright led light that illuminates dark wor