Large HSS Step Drill Bit, 12 Sizes Titanium High Speed Steel 6 to 60MM Drill Bit for Sheet Aluminium Metal Wood Hole Drilling, Big Multiple Hole Stepped Up Bit for DIY Lovers (1 PC Step Drill)

• ➤➤One Bit for All -- The bit comes with 12 hole sizes: 6mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 55mm, 60mm. , saving you time and efforts to change bits, quadrupling your drilling efficiency.
• ➤➤Durable Titanium Coated Bits -- The step drill bit is made from 4241 High Speed Steel, wear resistance for better and faster hole -drilling performance.
• ➤➤Universal Compatibility -- The rapid strike tip drills twice as fast as the average step drills and can drill acrylic, PVC, wood, aluminum and iron sheets up.
• ➤➤Easy to Use -- Compared with ordinary twist drills. The shaking is small, and it can be opened without the use of center punching.
• ➤➤ Use tools -- pistol drill, table drill. Filling water to cool while working can effectively extend the service life of the drill bit, and the recommended drilling speed is 250--400 rpm.

Product Name: 6-60mm HSS Spiral Groove Step Drill Bit Material: 4241 High Speed Steel Number of Steps: 12 (6, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60mm) Shank Diameter: 12.5mm (1/2”) Recommended Rotation Speed: 250-400 RPM Item Size: 6.5 x 6.5 x 10.5cm/2.56” x 2.56” x 4.13” Item Weight: 598g/1.32lbs Package Includes: 1 x Step Drill Bit