Mengshen Step Drill Bit 4-20mm M35 HSS-Co Spiral Groove Hex Shank, Multi-functional Drilling Tool HSS Cobalt Counterbore Hole Cutter for Wood Stainless Steel Cutting

• Much More hardness M35 High Speed Steel - classic high speed steel with cobalt for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal.
• Good Design - Hex Shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.
• 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.
• 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.

Mengshen M35 Step Drill Bit is made of high speed steel together with cobalt, which lasts the bit a long using life. Features: 1. M35 High speed steel for longer service life; 2. Hex shank prevents slip in drill chuck; 3. Double cutting blades design enables a faster and smoother cutting; 4. The advanced double spiral flute design outperforms straight flute design and extends the life of the bit. The split point tip increases speed, and they also include laser-engraved measurements to increase step visibility. 5. The sharpness ensure easily cut through most sheet metal, plastic and some other materials with ease, especially for stainless steel plate & quenching steel plate. Specifications: Material: M35 HSS Sizes of the Step Drill Bits: 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm Package included: 1 x M35 HSS Drill Bit