DeWalt 20 V max lithium ion hammer drill/impact driver combo kit. DCD985 20 V MAX* hammer drill with patented 3-speed all-metal transmission and 1/2 In. self-tightening chuck delivers 535 units watts out of maximum performance, faster application speed, and superior bit retention. DCF885 20 V MAX* 1/4 In. impact driver features 3 LED lights with 20 second delay to provide visibility without shadows. Kit includes a 20 V max 3.0 Ah Li-ion premium 3-speed hammer drill, a 20 V MAX* 3.0 Ah Li-ion 1/4 In. impact driver, two 20 V MAX* 3.0 Ah Li-ion battery packs, a belt hook, a charger, and a contractor bag. – Manufacturer: Dewalt.