Pro Grade Carbide Spot Drill Bit 120 Degree CNC Chamfering And Drilling Guide Tool Tungsten Steel Centering Locator For Precise Metal Hole Location 1 Piece D4 X 100 L

1-Piece carbide spot drill bit for precise metal drilling
✔️ D4 x 100 mm carbide spot drill with CNC chamfer guide

This Pro Grade carbide spot drill bit is designed for precise hole location in metalworking. It is commonly used with CNC setups, chamfer guides, and centering locators to ensure accurate starts for drilling.

✅ Diameter: 4 mm
✅ Length: 100 mm
✅ Point angle: 120 degrees
✅ Material: Carbide, uncoated
✅ Pack: 1 piece

💡 What is a spot drill bit used for in metalworking and why is carbide a good choice for precise drilling?

Spot drills give a precise starting point to guide the main drill, improving accuracy and reducing wandering on metal parts.

• Precise center marking improves hole location for CNC milling and manual drilling
• Carbide offers high hardness and wear resistance for long tool life
• Pairs with chamfer guides and centering locators for clean entry
• Ideal for pre-drilling before threads or insert placement