This is a high-quality 1/2" High Speed Steel (HSS) Bridge/Construction Reamer with a 1/2" straight round shank. Bridge reamers (also known as construction reamers) are heavy-duty tools specifically designed for aligning and enlarging misaligned or overlapping holes in structural steel, bridges, rail cars, ships, pressure vessels, automotive frames, and other metal fabrication applications prior to installing bolts or rivets.

Key Specifications (from direct measurement and markings):

• Cutting Diameter: 1/2" nominal
• Shank Diameter: 1/2"
• Flute Length: Approximately 4" (standard for this size)
• Overall Length: Approximately 5-7/8" (standard)
• Flutes: Spiral (left-hand spiral, right-hand cut typical for pushing chips forward)
• Material: High Speed Steel (HSS) – Bright/polished finish
• Tolerance: H8 (precision class, common for hand or machine reaming to achieve accurate hole sizing)
• Shank Style: Straight round with possible safety collar or flats for secure grip in chucks, magnetic drills, or impact tools
• Point: Tapered/pointed tip for easy entry into misaligned holes