Ideal for the toughest industrial job site, the DeWalt D25500K 1-9/16 SDS Max Rotary Hammer Kit features an 11 Amp motor with variable speed controller. This slotted drive shafts off this SDS max combination hammer accepts most of the tool bits that a user can possibly has. This widens the versatility of the tool to a great extent.With a speed range of 140 to 280 RPM and blowing capability of 1330 to 2660 BPM this heavy duty dewalt tool is apt for drilling with less effort at construction sites or the like. .73 to 7.3 ft-lbs of impact energy per blow make it a power drill, ideal for most of the heavy-duty job. The variable-speed/impact controller optimizes the performance of the drill as it lets you set the RPM or the BPM as per your requirement. The controller even ensures optimal power usage. The rubber grips reduce the effect of the vibrations and make this tool less strenuous to use even when used for long hours. The general strain of holding and using a power tool is further minimized by this driller's rear mount handle.Now you need to bend less when using the tool in down drilling condition. To ensure use safety, the factory clutch reduces the reaction of the tool if the bit locks up while in operation. The DeWalt D25500K drill set includes a 360° Side Handle that enables easy positioning of the tool as per the job site condition for convenient handling.