01P990 - Walter HSS Bridge Reamer Set - 6 Piece (3/8" - 1")

Precision Hole Alignment for Structural Steel

The Walter 01P990 Reamer Kit is an essential collection of high-performance cutting tools designed for the rigorous demands of metal fabrication and structural steel erection. Manufactured in the UK, these reamers are crafted from premium High-Speed Steel (HSS), ensuring they maintain their cutting edge and structural integrity even under high-torque applications. The kit includes six essential sizes ranging from 3/8-inch to 1-inch in 1/8-inch increments, providing versatility for a wide array of bolt hole alignment tasks.

Engineered for efficiency, each reamer features a tapered point that facilitates smooth entry into overlapping or misaligned holes. This design allows the tool to align the materials as it cuts, creating a perfectly round and sized hole ready for bolting. The application of a black oxide coating serves a dual purpose: it enhances the tool's resistance to corrosion and significantly reduces friction during the cutting process. This thermal management is critical for preserving the hardness of the steel and extending the overall lifespan of the tool.

One of the standout features of this series is the 3-flat shank design. Unlike traditional round shanks that can spin inside the chuck under heavy loads, the flatted shank provides a positive lock within the jaws of hand-held pneumatic or electric drills. This ensures maximum torque transmission and prevents damage to both the tool and the drill chuck. Whether you are working on truck frames, bridge girders, or general steel assemblies, the Walter Reamer Kit delivers the reliability and precision required for professional results.

Key Technical Benefits:

• Material Grade: High-quality HSS for superior hardness and heat resistance.
• Geometry: Spiral flute design aids in efficient chip evacuation.
• Surface Treatment: Black oxide finish for lubricity and rust protection.
• Compatibility: Optimized for use with standard 1/2" chuck power tools.