The Makita DS4012 variable speed with reverse makes this heavy duty drill perfect for professional mixing of a variety of materials and is ideal for mixing thin-set mortar, drywall compound, masonry, paint and more. It has all ball bearing construction for durability and longer tool life and improved motor cooling for added durability and operational efficiency. The heavy duty industrial 1/2" drill chuck is engineered for positive bit retention. It has on board chuck kit storage for fast and convenient bit changes. It is double insulated. Additional features include conveniently located forward / reverse switch; lock-on button enables easy continuous operation; rear handle rotates 360° with 24 locking positions; removable side handle; and lanyard loop provides secure attachment of safety / security lanyards. An ergonomic soft rubber grip for vibration absorption and comfortable operation.