Hex Shank Quick Change Power Tools Kit 1/4" Step Drill Bit Set HSS Titanium Coated Spiral Grooved Drill Bits 3-12mm/4-12mm/ 4-20mm for Sheet Metal Hole Drilling, Home-Made Woodworking, Plastic

Specification: Type: Step Drill Bits Material: HSS High Speed Steel Finish: Titanium Coating Hexagonal Shank: 1/4 Inch Quick Change Colour: Golden Weight: 87 g / 3.06 oz Sizes of the Step: 5 Step Bit from 4mm to 12mm, approx. 62mm/ 2.44inch 9 Step Bit from 4mm to 20mm, approx. 78mm/ 3.07inch 10 Step Bit from 3mm to 12mm, approx. 76mm/ 2.99inch Feature: Durability: Coated by titanium, this step drill set performs well in heat, corrosion and rust resistance. high-speed steel construction for longer cutting edge life even at extreme temperatures. Two-flute design: Clears chips faster and allows particles to escape easily, smooth cutting. step drill bits set for home DIY and general building supervision/engineering use. Easy drilling: Each drill bit is made to the exact specifications written onto each step. in addition to that every drill experience will be faster, smoother and more precise. Easy to use: Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal. Package Included: 3 x Step Drill Bit Set Notes: 1. Size for manual measurement, there may be a 1 to 3 mm error, belongs to the normal phenomenon. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

• 【QUALITY MATERIALS】Forged from titanium coated high speed steel.Make these step drill bits has high hardness.
• 【EFFICIENT OPERATION】In the drilling process, the step drill bits shakes less than the twist drill bits, and has a clear scale mark.
• 【ANTI-SKID DESIGN】The hex shank of step drill bits adopts groove design, help the electric drill clamp it more firmly, prevent sliding or falling off during rotation.
• 【MULTI PURPOSE】This set of step drill bits is suitable for drilling of thinner stainless steel, carbon steel, aluminium plate, iron plate and other materials.
• 【VARIOUS SPECIFICATIONS】The step drill bits set has 24 different apertures. They can process different kinds of diameter holes, which greatly saves you a lot of trouble.