The GPH01 is powered by a Makita built brushless motor that delivers 1,250 in.lbs. of Max Torque, outpowering other driver-drills in heavy-load applications. An ultra-smooth variable speed trigger provides optimum control. The GDT02 is also powered by a Makita built brushless motor, and that delivers 1,860 in.lbs. of Max Torque to outpower other impact drivers in heavy-load applications. One-touch 4-speed power selector button under the chuck allows users to adjust speed easily. The hammer driver-drill and impact driver are engineered to outlast with Extreme Protection Technology to provide increased dust and water resistance in harsh jobsite conditions.