Meichoon HSS M35 Step Drill Bit 4-20mm, Cobalt Spiral Groove Large Bit Pagoda Step Drill Bit Set Hole Reamer Triangle Handle HSS Co Drilling Counterbore DC17A

• M35 HSS & Cobalt - M35 High speed steel makes it last longer than others, cobalt ensures easily cut through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease.
• Good Design - Triangle shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
• A necessity for family or handyman or professionals - Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper and many other types of sheet metal, especially for stainless steel plate & quenching steel plate.
• Split point tip increases speed. It can automatically deburr holes while drilling to keep the drill bit clean.
• You can use water to cooling it when it is work and it can be used for even longer.

HIGH HARDNESS - Meichoon M35 cobalt step drill bits are made of high speed steel with cobalt, which lasts the bit a long service life. Features: 1. High speed steel for longer life; 2. Double cutting blade design allows faster and smoother cutting; 3. The advanced double spiral flute design outperforms straight flute design and extends the life of the song. The split point tip increases speed, and they also include laser-etched measurements to increase the visibility of steps. 4. The sharpness ensures easy cutting through most sheet metal, plastic and other materials with ease. Specifications: Material: high speed steel. Step Drill Sizes: 9 steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm) Package includes: 1 x 4-20mm M35 HSS Co Drill Bit