Drill bit Proline 70830 — metal, 8 mm diameter, 300 mm length, 1 pc

Single Proline 70830 metal drill bit with an 8 mm diameter and 300 mm overall length, intended for drilling into metal. The straight shank is compatible with standard hand drills and drill presses. Supplied as a single piece, the bit is designed for through-holes and deep drilling tasks in steel and other ferrous materials where an extended reach at 8 mm is required.

Advantages

The Proline 70830 drill bit offers a long 300 mm working length that enables access to deep or hard-to-reach holes without extensions. Its 8 mm diameter provides a common drill size for fastener and assembly work in metal. The straight shank ensures secure clamping in standard chucks, and the single-piece delivery simplifies inventory and replacement. The tool is suitable for use in both portable drills and stationary drill presses.

Suitable for

• Drilling through-holes in mild and structural steel
• Deep-reach metal drilling where an extended length is needed
• Workshop and on-site metal fabrication tasks
• Use with hand-held drills and drill presses

Key specifications

• Material suitability: metal, ferrous materials
• Diameter: 8 mm
• Total length: 300 mm
• Shank type: straight shank for standard chucks
• Quantity: 1 piece

How to use

Secure the Proline 70830 bit in the drill chuck, ensuring it is centered and tightened. Select an appropriate rotational speed and feed rate for the metal being drilled; use lower speeds and steady feed for hard steels. Apply cutting fluid or lubricant to reduce heat and prolong bit life during deep drilling. For through-holes, withdraw the bit periodically to clear chips if necessary and maintain cooling. After use, clean chips from the flute and store the bit in a dry place to prevent corrosion.

Usage recommendations

Use appropriate personal protective equipment, clamp the workpiece firmly, and select compatible drill speed and coolant. Avoid excessive side loads to prevent breakage of the long shank.