7mm Cutting Dia Round Shank Cemented Carbide Twist Drill Bit, 130mm Length 2 Pcs M5x50mm smooth and won't scrape the

smooth and won't scrape the thread

The black nitride coating increases hardness and wear resistance

Color:Lime

Mounting Hole Distance: 25mm

and water soluble

7mm Cutting Dia Round Shank Cemented Carbide Twist Drill Bit, 130mm Length 2 Pcs M5x50mm smooth and won't scrape theDescriptions: 1. Twist drill bits are made of cemented carbide tip for easier drilling into any hard objects, long service life, it is more sharp and durable than others. 2. Milled U flutes with deep cut spiral deliver fast material removal. Suitable for drilling in tough metal, including abrasive alloy and hardened steel. 3. Suitable for drilling of stainless steel, die steel, titanium alloy, cast steel, iron, aluminum alloy and copper. 4. Round