• Material:Solid tungsten carbide
  • Size:Total length 60 - 70mm,shaft - (6MM) 0.236 Inch,outer diameter of the tip - 12mm,tip blade length 10mm - 25mm,ball shape length - (60MM),suit for (6MM) 0.236 Inch,Electric die grinder
  • Can process a variety of high-precision mold cavity (including all sorts of hardened steel) and non-metal (such as marble, jade, bone),and the machining hardness can reach to HRA85,it can replace Petiole small wheel
  • 5Pcs Double Cut Solid Carbide Rotary Burr Set,Carbide burr set,for die grinder drill,metal carving,drilling,Cleans up welds or works with metal frequently,Wide Range of Uses Includes Body Shops,Fabrication Shops,Brake Shops,Industrial Shops,Die Manufacturers
  • For electric or pneumatic tool drive (can also be used in machine tool)The speed of the electric or pneumatic tools usually is 6000-50000 revolutions per minute,Suitable for deburring and polishing cast iron,cutting,engraving carving,cast steel,carbon steel,alloy steel,stainless steel and other materials

These are remarkably aggressive and gets the job done without a second guess about it!

Great for drilling holes in ceramic pots

Works great with die grinder air tool

I bought this set for shaping a welded magnesium alloy engine part. The welds added too much bulk to clear other parts. I used the cylinder and the ball bits in a flexible shaft at about 1000 rpm but they could just as easily be used in a drill chuck. Reshaping the part took about 30 minutes, which was mostly repeated test fittings after removing material. I was surprised and happy at the performance of these bits given their low cost. They performed perfectly and the part now fits. I can't say how they'd work on harder material like steel or aluminum but I would expect them to be fine there also.