The STEELMAN 41856 Magnetic Diamond Tip Screwdriver Set provides you with an array of 8 of the most commonly needed driver sizes for most workshop and household construction, maintenance, or repair jobs. Made of durable and hardened S2 carbon steel these tools won't easily chip or round out from repeated use. A specialized diamond coating on the tool tips provides better grip on fasteners with increased friction that reduces cam-out and aids in removing stripped screws fasteners. The tool shafts are covered with a protective black oxide coating for increased rust and corrosion resistance and the tips have been permanently magnetized so they won't drop fasteners while you're working. In all the set includes 4 slotted/flat head screwdrivers sized 1/8 x 3-inch, 3/16 x 3-inch, 1/4 x 4-inch, and 5/16 x 6-inch and 4 Phillips head screwdrivers sized PH0 x 3-inch, PH1 x 3-inch, PH2 x 4-inch, and PH3 x 6-inch.