Reverse Counterbore: 3/8" Dia, 3/16" Pilot Hole, 4 Flutes, High Speed Steel MPN:190-3L

Our high-quality reverse counterbore is the perfect solution for achieving professional results when counterboring holes in various materials. With a diameter of 3/8 and designed to accommodate pilot holes of 3/16, this versatile tool features four flutes that create smooth and accurate cuts, while its high-speed steel construction ensures durability and long-lasting performance. Its overall length of 1/2 makes it ideal for use in automotive engineering or aerospace applications where precise counterbore holes are essential. The reversible counterbore comes with standard and oversize pilots, and is compatible with pilot drill bits from 185-4 to 186-4. Whether you're working on small electronics or large machinery, our reverse counterbore will deliver outstanding performance and results every time.

Top product features:

• High-speed steel construction for durability
• Compatible with pilot drill bits from 185-4 to 186-4
• Four flutes for smooth and accurate cuts

Top product applications:

• Counterboring in automotive engineering
• Deburring and finishing in machining operations
• Thread repair in aviation industry