Metric M42 8% Cobalt Twist Drill Bits Set for Stainless Steel and Hard Metal (1mm-10mm/19pcs)

Brand: STROTON

Features:

• Premium M42 8% Cobalt Steel ,68-70 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.
• 3 Steps Desigh for Cutting through Stainless Steel,Hard Metals,Aluminum,Plastic.
• This Cobalt Drill Bit is Typically Capable of Running Three to Five Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.
• The Sufficiently Sharp Bit Edge Can Cut the Metal Material into Long Strips of Iron Chips rather than Slowly Grinding Throng the Material with a Blunt Drill Bit.
• 19Pcs 135 Degree Split Point Drill Bits Includes :1mm(length:3.4cm) 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm(length:8.5cm) 5.5mm 6mm(length:9cm) 6.5mm 7mm 7.5mm 8mm(length:11.5cm) 8.5mm 9mm 9.5mm 10mm(length:13cm) [DIA 0.5mm Increments] .

Details: Product Advantages:

(1)
3 Steps desigh tip starts drilling immediately with less force and eliminates “walking” across the work surface.
(2) Holds up better than generic high-speed steel,
Cobalt gives high-speed steel more heat and wear resistance.
(3) This drill bits set is made of
Premium Cobalt (80,000 dollars per ton).
(4) The M42 metric cobalt drill bits can cut through Stainless steel and Hard metal,Hard wood, although they can be used for softer materials such as Aluminum,Plastic.

Some Important Tips about
drilling stainless steel and hard metal:
    (1)Controling the drill speed from 200 to 1000 RPM would make it easier for you to drill holes on stainless steel.
________________________________
                Stainless Steel                  
    ____________________________
      Drill diameter               RPM        
    ____________________________
      ≤5mm                       1000~700
    ____________________________
      5-10mm                     700~350
    ____________________________
      10-15mm                   350~200
________________________________

    (2)Add stainless steel tapping oil or engine oil to prevent the stainless steel from overheating and forming a very hard oxide layer.It also works adding some vinegar,soy sauce or water if you don’t have engine oil.

UPC: 743829466298

Package Dimensions: 41x197x520