Jefehex 18Pcs Drill And Tap Set With 1 Piece T-Handle Ratchet Tap Wrench, Tap Drill, Tap and Ratchet Tap Wrench Set Includes: 9 drill bits include wire gauge sizes #36, #29, #25, #21, #7, letter sizes F, U and inch sizes 5/16", 27/64". 9 hand taps include 6-32 UNC, 8-32 UNC, 10-24 UNC, 10-32 UNF, 1/4"-20 UNC, 5/16"-18 UNC, 3/8"-16 UNC, 7/16"-14 UNC, and 1/2"-13 UNC. 1 ratchet tap wrench fits 0-1/4" tap. The set has a strong and professional box with indexed holder and standing up tiers for easy storage and pickup. Wide Applications: The tap and tap wrench are designed to make shallow cuts in narrow spaces. The drill and tap combo are tailored for industrial production, maintenance or portable drilling jobs in metal, aluminum, and plastics. And they fit majority drill driver brands on the market. Taps in this set can be driven by both hand and machine. Drill Bits, SAE Taps and Gear Tap Wrench Cost-Efficient Combination: provides a secure method of drilling the proper hole size before cutting right-hand internal threads. The T-handle silver wrench allows three settings-forward, reverse and lock positions which can be set with your hand efficiently. Purchasing all three tools in one combo offers convenience and cost efficiency. It is much cheaper than buying them separately. Fully Ground Cutting Teeth, Big Rake Angle and Wide Straight Flute Taps: offer more accurate threads on both through holes and blind holes comparing to rolled or machined threads, keep tap cutting teeth sharper and allow chips to collect in the flutes to cut deeper holes. Heat Treated Black Oxide HSS Drill and Tap: high speed steel plug hand threading tap and drill bits provide superior durability, high hardness and speed. Black and gold surface finish resists corrosion and lubricates the bits for longer cutting life. 135 degrees split point and twist design prevent drill bits walking and penetrate hard materials without a pilot hole.