Description
Drillco 420A156 7/8 Bridge Reamer Taper Shank is engineered for precise hole enlargement and alignment in structural steel, bridgework, and shipbuilding applications. The pilot-type point ensures accurate starting and alignment, even in small or slightly off-center holes. Its 3-flute design enhances centering ability and stability during cutting, while the reduced shank makes it ideal for use with portable tools.
Features:
- 7/8″ bridge reamer with taper shank
- Pilot-type point for easy entry and precise hole alignment
- 3-flute design improves centering and reduces chatter
- Reduced shank design for portability and versatility
- Constructed from durable high-speed steel (HSS)
Benefits:
- Accurately enlarges and aligns holes in heavy-duty steel structures
- Designed for demanding bridgework, shipbuilding, and fabrication tasks
- Improved centering delivers smoother operation and cleaner finishes
Technical Specifications:
- Model: 420A156
- Size: 7/8″
- Shank Type: Taper Shank
- Flutes: 3
- Point Type: Pilot
- Material: High-Speed Steel (HSS)
- Application: Hole enlargement and alignment in structural steel fabrication






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