Auniwaig Step Drill Bits Set HSS 3-12mm 4-12mm 4-20mm Titanium Coated Straight Flutes Hex Shank for Metal Wood Plastic

Auniwaig Step Drill Bits Technical Parameters Total Length:3-12:80mm;4-12:64mm;4-20:75mm Shank Type: Hex Shank Shank Diameter: 6mm/0.23 Drilling Diameters: [5 Steps]: 4mm, 6mm, 8mm, 10mm, 12mm; [9 Steps]: 4mm, 6mm, 8mm, 10mm,12mm, 14mm, 16mm, 18mm, 20mm; [10 Steps]: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm,12mm Material:High Speed Steel Product Feature *Step drill bits mainly used in high hardness steel punch, such as stainless steel, hardened steel, meet many customers by common step drill work could not be completed, the real opponent of stainless steel. Step drill holes of the stainless steel sheet. *Each step on the bit is larger in diameter than the step before. Smaller step drill bits are self-starting and no pilot bit is required to start the hole. On larger step drill bits, you need to have a hole pre-drilled that is equal in diameter to the smallest step on the bit. Package Content 3 x Step Drill Bits

• 【Parameter】- Shank Type:6mm Hex Shank;Material:High Speed Steel with Titanium Coated;Drilling Diameters: [5 Steps]: 4mm, 6mm, 8mm, 10mm, 12mm; [9 Steps]: 4mm, 6mm, 8mm, 10mm,12mm, 14mm, 16mm, 18mm, 20mm; [10 Steps]: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm,12mm
• 【Function】- This step drill bit is durable and strong enough to punch and drill clean holes in materials like metal,wood,etc..It can also help to enlarge existing holes and clean edges
• 【Feature】- It is ideal for drilling holes for iron, metal, aluminum, copper, wood, plastic, PVC board and many other types of sheets
• 【Application】- Suitable for hand-held drilling rigs, drilling machines, milling machines and machining centers, for automotive metal sheet, maintenance and modification, bridge doors and windows, home appliances, etc
• 【Warm Note】- High temperature will affect the working life, please use coolant while drilling on metals to ensure the drill bit working properly. Please keep it properly preserved. Avoid falling the bits from high place