4 - 12mm Step Drill HSS 

For drilling and reaming freely of burs of sheet steel, thin-walled tubes and structural steel shapes and deburring of one side in one step.

Step Drill drilling range 4 - 12mm.

Step drill is made of steel.Harder and not easily damaged.

The step drill bits makes a very good impression visually. And the stepped grooves to prevent slippage in the chuck. With a twist drill for positioning and Reduce the damage of the step drill.

 High speed steel step drill design. By the heat treatment and tempering, so the step bits has the function of long-term use.

 Perfect for home DIY and general building supervision / engineering use.

Suitable for use of drilling holes in a variety of materials such as steel cutting, brass, wood, plastic, etc

Split Point

Hole- and speed-diameter laser engraved on the tool