Hex Shank Step Drill, 3pcs High Speed Steel Step Drill Bits (4-12mm, 4-20mm and 4-32 mm) Diameter Precision Drilling, Titanium Coated Cone Drill with Automatic Center Punch

• 【Include 3 Step Sizes & Easy To Drilling】: 3 PC Set HSS Step Cone Drill Bits Titanium Coated(4-12mm, 4-20mm and 4-32 mm). Supplied with a cotton bag storage. Two-fluted design provides faster, smoother cutting;Provided with small pressure and the sets can cut through wood, sheet metal, steel and other surfaces.Step Cone Drill Bits design for precision drilling different size holes from 4mm up to 32mm in diameter,optimum speed and accuracy.
• 【Titanium High Speed Steel & Application】: classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.Titanium drill bit is particularly suitable for processing copper and aluminum pieces / mold steel / spring steel / cast iron pieces / iron and other metal materials.
• 【Material】：Perfectly Round Holes in Steel, Brass, Plastic, Wood, Copper, fibreglass, PVC, thin metals and aluminium.Heat Treated and Highly Polished,Titanium Coated to Reduce Friction and Heat.
• 【Tri-Flatted Shank】: fits into power tools chuck securely and eliminates slip.

Features: An essential hardware tool for woodworking using Professional drill for deburring, chamfering, elliptic hole enlargement Suitable for punch holes through sheet metal, steel plate, aluminum plate, brass or wood High-speed steel and titanium coating. High quality with good durability for your durable usage This drill bit set includes 3 sizes(4-12mm, 4-20mm, 4-32mm), which will meet your different needs perfectly Specifications: Material: High-speed steel Surface Treatment:Titanium coated Size: #1: 4 to 12mm 5 steps(4mm, 6mm, 8mm, 10mm, 12mm) #2: 4 to 20mm 9 steps(4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm) #3: 4 to 32mm 15 steps((4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm,28mm, 30mm, 32mm) Package Contents: 3 x Step Drill Bit Set 1 x Automatic Center Punch 1 x User's Manual