The ETK20 72-piece air tool kit includes four of the most popular air tools for general assembly within the home or shop. The 1/2-inch impact wrench carries 230 ft./lbs. of torque for maintenance and auto repair. The 3/8-inch ratchet delivers 45 ft./lbs. of torque and provides extra leverage for those hard-to-reach fasteners. An assortment of Impact sockets are included that work with both the impact and ratchet wrenches. The air hammer comes with three chisels and is ideal for cutting, punching, and removing mortar from bricks. The mini rotary tool includes 1/4- and 1/8-inch collets for all types of grinding stones and rotary tool bits. The mini rotary tool is perfect for general high speed grinding, polishing, and deburring. Combined with additional accessory items and a handy storage case for portability, the ETK20 has everything you need to get the job done.Includes the following: 1-1/2-inch impact wrench. 1-3/8-inch ratchet, 1-1/4-inch rotary tool, air hammer, eight sockets, 3-inch extension bar, 1 Hex Wrench, 1/2- to 3/8-inch adapter, 3-inch bits holder, 20 20mm bits, one 1/8-inch collet, 10 grinding stones, two sanding drums, two sanding drum papers, two flap wheels, two rotary tool wrenches, three chisels, one chisel spring, one QC body, five male plugs, one dual tire chuck, one tire gauge, oil Bottle, tape seal, hose clamp, hose and fitting 1/4-by-1/4-inch MNPT, and carry case.