X-Steel brand, registered in Australia. Expert quality! 

Special working on stainless steel, these self-starting point and three-fluted design on the HSS M35 cobalt countersink allow it to make clean, accurate cuts in even the toughest materials. It leaves smooth, burr-free edges with an 90-degree chamfer that creates a snug resting place for countersunk screw heads. Constructed with high-speed steel M35 cobalt and coated with super-hard cobalt, this bit has the durability to withstand high-heat conditions for lasting use.

CNC machine manufactured with high accurate size and shape 

CBN grinding wheel milled, smooth and shinning.

Following size options, can choose the size from "Size" selecting window, for sizes not included can arrange from our souring office:

Using instruction:

1. Try to keep the drill bits 90 degree with the working plate 

2. Using cooling liquid when drilling to extend the working life of the bits

3. Using proper drilling speed when working with power drills