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

• Much More hardness - 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.
• 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.

High Hardness - Mengshen M35 Cobalt Step Drill Bits is made of high speed steel together with cobalt, which lasts the bit a long using life. Features: 1. High speed steel for longer service life; 2. Double cutting blades design enables a faster and smoother cutting; 3. 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. 4. The sharpness ensure easily cut through most sheet metal, plastic and some other materials with ease. Specifications: Material: High speed steel Sizes of the Step Drill Bits: 9 Steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm) Package included: 1 x 4-20mm M35 HSS Co Drill Bit