Dewalt DCD985BR 20V MAX Cordless Lithium-Ion Premium 3-Speed Hammer Drill (Bare Tool) (Certified Refurbished) DEWALT 20V Max* Lithium Ion batteries offer longer tool run-time and enhanced durability. Heavy-duty 1/2" metal ratcheting chuck with carbide inserts provides superior bit gripping strength. High power, high efficiency motor delivers 535 unit watts out of max power for superior performance in all drilling and fastening applications. 3-speed, all-metal transmission matches the tool to task for fastest application speed and improved run time. LED light with 20-second delay after trigger release.